Elementary Discussion of the Distribution of Prime Numbers

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雅思词汇近义词对照表

雅思词汇近义词对照表

一、职业enterprise(创业) career(一生为之奋斗的) job(用于谋生的)work occupation(占用时间精力做的) profession(教师什么的带有专业性的) entrepreneur二、下降减少减轻缓和eliminate (消除 eradicate)diminish decrease decline mitigate (减轻缓和 ease) alleviate soothe ease appease mollify deplete descend weaken lessen relieve defuse 三、超过exceed outstrip transcend leapfrog surpass overtake emulate四、收入earnings: 多指通过劳动或投资等手段所得到的收入。

allowance: 指收入中的补贴部分。

income: 与earnings含义很相近,但前者强调总收入。

salary: 指按年定下,按月或星期平均给予的报酬,指脑力劳动者的薪水。

wage: 多用复数形式,指按小时、日或星期的报酬,通常指体力劳动者的工资。

pay: 是个通用词,可取代salary与wage. fee: 指提供某种服务收取的固定费用五、基本的基础的最初的初级的primary prime rudimentary elementary六、原始的original rudimentary primitive primary七、考虑、思量consider thinkof contemplate ponder deliberate八、猜测推测guess speculate conjecture conclude九、可行的practical viable feasible十、degrade degenerate十一、推动推进促进propel promote advance(advance the process toward ……)motivate(激励)further (增进促进进一步发展)boost(使增长使兴旺)十二、引起造成pose incur cause spark trigger induce generate arouse(激起引起某种感情)be productive of ignite十三、组成成分ingredient component constituent composition comprise(包含包括)十四、花费开支expense expenditure outlay cost十五、阻碍阻塞妨碍obstruct hinder hamper block obstacle barrier intervene handicap interfere frustrate discourage inhibit stem quash禁止:forbid prohibit ban bar inhibit十六、延期推迟delay defer postpone extend extension put off十七、极好的marvelous superb splendid glorious awesome terrific fabulous fantastic十八、恢复复职restore rehabilitate还可恢复名誉recover revive revitalize rally十九、摇摆摇动swing sway waggle wobble vibrate(震动颤动)二十、倾斜tilt incline slope lean(人倾斜倚靠) bank(斜坡) slant hillside二十一、minute二十二、短暂的momentary temporary transient provisional二十三、建立建造build establish construct found二十四、撒把…布满strew sprinkle scatter 洒:spatter spray splash(飞溅泼洒)二十五、给予赠予授予accord grant render give bestow confer(confer citizenship to...) award二十六、理解掌握absorb grasp take in master understand comprehend grip(只有名词是理解的意思) digest (理解吸收)make sense of apprehend二十七、承认准许同意allow acknowledge admit grant concede二十八、翻译translate render二十九、使处于某种状态=makerender三十、修正改正amend modify revise三十一、补偿make amends for compensate for三十二、附属物appendix adjunct attachment三十三、背景background setting context backdrop三十四、繁荣发展flourish boom blossom prosper thrive bonanza三十五、轻率鲁莽的rash reckless abrupt foolhardy三十六、大胆的勇敢的brave bold fearless dauntless gallant audacious三十七、限制restrict constrain (constraint 限制限定约束)limit confine restrain三十八、必需的necessary indispensable integral essential三十九、地区地域zone area region district belt四十、条带belt band strip bar四十一、竞争斗争搏斗contend combat fight四十二、冲突名词:clash(动名) collision conflict(动名) discord(名词不一致不和纷争)四十三、微弱的昏暗的faint dim四十四、模糊的vague dim fuzzy四十五、满腔怒火的flaming raging四十六、侵犯入侵invasion incursion intrude(打扰侵入人生活) infest(侵扰) aggression assault四十七、职权范围权限remit purview四十八、有吸引力的吸引人的magnetic attractive tempting absorbing seductive名词:allure诱惑力吸引力 glamour intriguing enticing fascinating四十九、不重要的marginal trivial lesser五十、融合结合合并混合merge integrate combine blend(v&n 混合物)compound五十一、不公平的偏心的有偏见的biased prejudiced unjust unfair partial(bias prejudice) inequitable inexpedient 五十二、热情的狂热的fond enthusiastic zealous torrid intense(热情的强烈的) passionate五十三、有洞察力的insightful penetrating五十四、非凡的extraordinary phenomenal remarkable eminent五十五、确定的sure positive(completely sure)五十六、宣传publicity propaganda publicise advertise五十七、初级的初步的preliminary rudimentary elementary五十八、原始的未充分发展的落后的rudimentary primitive五十九、初等的elementary primary六十、基本的prime primary rudimentary elementary radical(激进的)fundamental ultimate六十一、问题question query六十二、击退抵抗抵制拒绝repel repulse resist reject六十四、使厌恶反感repel repulse disgust obnoxious(极讨厌的)六十五、取消cancel call off scrap六十六、碎片segment scrap shred chip fragment debris六十七、取回索回retrieve(挽回) reclaim六十八、搜寻search seek forage scour scout(某地) grope rummage六十九、结实的robust stout sturdy七十、纤细的苗条的slim slender delicate thin slight(瘦小的纤细的)七十一、壮丽的宏伟的magnificent splendid spectacular grand dazzling glorious epic七十二、经受住抵挡住耐热性resist withstandendure bear七十三、相似resemble similar alike analogous七十四、天才天资talent gift genius aptitude七十五、集会meeting gathering assembly rally七十六、立法机构legislature assembly七十七、燃烧v.或n.burn flame blaze combustion kindle combust七十八、使保持使稳定持续sustain maintain七十九、卷coil reel八十、浏览look through browse八十一、愉悦的宜人的pleasant agreeable八十二、一致的coherent consistent accord with be compatible with correspond(动词) uniform 八十三、遵守obey comply with conform八十四、结构structure configuration fabric framework八十五、“腐”腐败腐烂:decay decompose腐蚀:erode贪污腐败的:corrupt八十六、献身致力于devote dedicate be commited to doing八十七、缺点缺陷不足disadvantage weakness shortcoming defect fault deficiency handicap flaw drawback 八十八、缺乏的insufficient lacking deficient devoid of scarce deficit(名词缺少赤字)八十九、谴责condemn denounce censure九十、指责blame reproach scold(斥责)九十一、控诉控告accuse charge denounce prosecute indict sue九十二、支配命令指定command dictate appoint designate dominate prescribe assign specify九十三、分散split scatter disperse九十四、处理解决deal with cope with tackle handle dispose manipulate solve resolve confront九十五、证明demonstrate verify prove manifest substantiate testify sustain九十六、屈服认输succumb(抵挡不住诱惑攻击…屈服) give in back down (放弃认输自己观点)yield sell out submit subject(臣服服从)九十七、散布disperse(实的) disseminate(虚的) spread九十八、包含包括comprise include embrace encompass incorporate embody九十九、持久的lasting enduring durable perennial一百、全神贯注的absorbed buried engrossed be immersed in忙于:be busy doing be devoted to(致力于be dedicated to be commited to) doing be occupied in be engaged in一百零一、构想conceive formulate envisage(设想想象=envision)一百零二、仅仅only solely merely solitary(唯一的仅有的用于疑问句否定句)一百零三、断裂break crack fracture一百零四、模糊的vague blurred fuzzy nebulous hazy一百零五、无秩序的无计划的unplanned unsystematic chaotic random haphazard arbitrary indiscriminate(不加分析的随意的) disorderly一百零六、潮湿的wet damp humid moist dripping(湿淋淋的)一百零七、残废的disabled handicapped crippled一百零八、加剧exacerbate aggravate escalate intensify一百零九、区别distinguish discriminate一百一十、危害hazard jeopardy一百一十一、充满be filled with be laden with一百一十二、有害的harmful lethal detrimental adverse一百一十三、表明demonstrate manifest114.明了的clear manifest115.平常的普通的mundane mediocre ordinary116.假的仿制的fake false mock117.证实confirm verify corroborate substantiate sustain118.富饶的luxuriant prolific opulent fruitful(productive)119.骚乱混乱turmoil riot disorder ferment chaos disturbance uproar agitation无秩序的:disorderly haphazard120.困惑confuse bewilder muddle puzzle121.实施carry out implement enforce (enforcement authorities执法机构)put sth into practice122.强制迫使enforce compel oblige(be obliged to do)123.线索clue hint124.态度观点opinion point of view perspective outlookviewpoint125.繁殖breed reproduce multiply propagate bear126.明显的obvious bold conspicuous evident distinct apparent visible 127.撤退withdraw retreat128.批准approve sanction129.隐藏藏匿secrete conceal screen(掩藏庇护保护shield wrap)130.控告accuse prosecute indict impeach(弹劾)131.断言宣称assert allege affirm132.残忍的cruel ruthless vicious(残酷的)133.诱饵decoy bait134.指挥控制take command of in command of135.检查inspect examine scrutinize scan136.掩藏保护庇护screen shield shelter wrap conceal(隐藏藏匿)137.抓住grip grasp seize clasp(握紧)138.夺snatch grab139.抓住机会grab seize140.利用utilize seize on tap141.处罚discipline(动词) penalty punish(动词) sanction142.杰出的著名的outstanding famous eminent celebrated renowned well-known 143. 停止halt cease cessation stop drop144.致命的fatal lethal deadly145.代替取代substitute replace supersede146.监视scrutiny spy on surveillance147.支持back support underpin stand for uphold(支持维护(正义)uphold the law维护法律)sustain(bear 支撑)pro148.仓库storehouse depot warehouse storage store149.奇怪的古怪的eccentric weird odd strange grotesque(怪诞的奇形怪状的)150.infest interfere intervene intrude151.掩盖veil overshadow conceal152.强壮的stout(肥壮) sturdy153.初学者novice virgin rookie recruit(新兵新成员)154.使应接不暇淹没inundate overwhelm155.罢免oust unseat depose156.揭露unveil disclose reveal uncover expose157.控制rig curb rein back(严格控制) manipulate regulate(控制管理调节调整)handle manoeuvre158.分配Allot distribute allocate assign dispense(分配配药)159.评价评估appraise assess estimate evaluate160.把……归于Attribute...to...credit A with B =criedit B to A ascribe sth to sb accredit ;owe……to161.决心做Be bent on doing(通常指坏事) be determined to do162.承担责任shoulder/take/bear /assume /undertake the responsibility for hold sb accountable for 责任义务:liability obligation163.小册子booklet pamphlet brochure(介绍手册指南)leaflet(传单)164.运动campaign drive(有组织的运动)165.投,掷,抛cast (cast doubt on;cast one's vote for)throw fling hurl166.容量容积volume capacity167.分类classify categorise168.坟墓cemetery(坟地,公墓)tomb grave tabut(棺材坟墓)169.引用cite quote170.跟踪track trail trace171.著名的renowned famous celebrated distinguished (著名的杰出的 outstanding customer)well-known eminent prestigious(有名望的声誉高的 a prestigious university名牌大学branded名牌的)notable(著名的;名人)172.导致引起lead to ;cause incur breed raise induce173.养育抚养bring sb up ;raise rear ;upbringing(名词养育培养)foster nurture nurse(培养培育 cultivate)nourish174.仁慈的charitable clement (宽容仁慈的)benevolent(好心肠的慈善的仁慈的)175.与……一致accord with; in accord with;be consistent with ;be identical to/with be identified with;uniform 一致的统一的 coincide with176.拥抱hug(v&n) cuddle(v&n)embrace(v)177.私密的private(私人的私密的;n 列兵)intimate(私密的亲密的 intimacy亲密关系密切)178.动力刺激stimulus(刺激物促进因素复数stimuli)motivation impetus incentive spur179.(凭空)猜测hypothesis speculation180.假定假设hypothesis assumption presume(动词) presumption supposition181.详细阐述explicate(详细解释) elaborate specify articulate delineate182.复杂的complex complicated intricate(错综复杂)sophisticated183. 抑制suppress(镇压抑制控制)dampen(弄湿抑制控制感情、反应)inhibit(禁止抑制)crack down restrain(控制自己抑制压制)184.装饰装扮decorate adorn ornament(v&n 装饰品)trim(修剪修整 to trim your hair理发装饰(be trimmed with)185.剥夺deprive bereave(指丧失亲友) strip(还可指剥夺荣誉)dispossess186.规模dimensions size scale187.丢弃discard abandon desert(遗弃抛弃擅离部队 deserter逃兵)derelict(被遗弃的指土地/建筑物;无家可归者 vagrant)scrap188.灾难不幸misfortune tragedy disaster catastrophe mishap(小事故)adversity(逆境)doom(厄运)189.部门department section branch division faculty(院系)190.不同的distinct different dissimilar191.活力vigour vitality dynamism192.巨大的huge tremendous giant enormous immense colossal fabulous gigantic monstrous heroic 193.节约节省economize retrench economical(形容词)194.开始做着手commence ;embark on ;set about ;get down to sth/doing sth;initiate(发动 launch)195.核心要点坚果或子粒的核仁core kernel196.遭遇遇到meet run into(遇到困难途中遭遇)encounter(不期而遇;遭遇不好的事;n 邂逅相遇)come across偶然遇见;被理解197.危及损害endanger hazard jeopardize menace threaten intimidate harm impair(damage destroy ruin wreck)compromise198.加强提高enhance reinforce intensify heighten strengthen consolidate cement199.擅长be good at ;be expert in/on/at ;be adept at ;be skilled in ;excel in/at ;specialize in(专门从事专攻)200.最后at last ;ultimately;eventually; finally;in the end201.能力才能capability capacity ability faculty202.强制的义务的compulsory mandatory obligatory203.煽动鼓动agitate foment provocative(形容词) incite204.委员会commission council205.外国的异域的alien exotic206.加快加速expedite speed up quicken207.扩大enlarge expand extend amplify(扩大声音信号)208.短途旅行expedition(远征探险exploration 考察短途出行:a shopping expedition 外出购物)excursion(远足短途旅行)209.外部的outside external exterior 同理内部的210.编造make up fabricate fictitious(编造的)211.基本原理foundation basics212.脆弱的易碎的fragile delicate213.搜寻查找search for forage for seek for grope for rummage(乱翻)214.实现fulfill realize215.承认admit acknowledge grant216.机密的confidential classified undisclosed(秘密的未公开的)217.感动的touched moved affected218.使适应adapt to adjust to(微调) accommodate219.改变change alter convert(转变转换 shift)220.预期expect anticipate foresee(预知预见)forecast(预报)predict(预测预言)221.背叛betray rebel defect222.监禁关押imprison captivity take ……into custody(监禁监护权)detain ;confine sb in;jail sb for sth223.折磨使痛苦torture torment afflict224.约会appointment engagement date225.保证guarantee(动词&名词保证书担保品) assure ensure warrant(许可证使正当warranty 保修期)promise pledge(保证诺言誓约使保证使发誓)commitment(承诺许诺保证)226.小屋hut cabin cottage shanty(棚屋简陋小屋shed)227.忽视ignore overlook neglect disregard228.非法的illegal illicit illegitimate unlawful lawless229.生动的vivid graphic230. 任命委任commission appoint designate nominate install accredit231.接合处交叉点junction joint(接头关节)intersection connection232.幼稚的不成熟的childish juvenile(不成熟的未成年的 juvenile employment 童工的雇用)233.律师solicitor(初级律师推销员法务官)attorney(律师(代表当事人出庭)代理人)barrister (出庭律师大律师辩护律师在英国有资格出席上级法庭进行辩护)234.建立build establish found set up institute erect235.敏锐的acute sharp keen agile penetrating236.保持keep preserve maintain(保持保养) retain sustain(维持支撑)237.记住背诵recite memorize238.不朽的immortal monumental239.想法概念concept idea notion240.包裹bag package parcel pack packet241.阶段时期stage phase242.意识到注意到notice realize be aware of perceive(perception 知觉)be conscious of243.允许许可同意admission permission agreement authorization(批准授权)244.受害者victim casualty prey245.恰当的appropriate apt proper decent(得体的)246.很可能做Be liable to be apt to be inclined to be prone to sth/do sth be likely to 247. 资产财产property(财产房地产 estate) possessions belongings asset248.性质特性特征characteristic feature quality attribute property trait identity249.考虑预料到take into account take account of take into consideration reckon with250.依靠depend on rely on reckon on(指望依靠)rest on251.纺织品fabric textile252.老生常谈truism commonplace trite(老生常谈的) 可乐谁253.改正改进correct remedy refine254.代表stand for(代表参加竞选) represent on behalf of255.描绘描画describe depict represent portray(portrait肖像)256.竞争对手rival competitor opponent257.阴谋scheme plot(n&v) conspiracy(conspire)258.会议meeting congress conference convention (conventional 传统的墨守成规的习惯的常规的)assembly parliament session259.一连串a sequence of a succession of260.收缩contract shrink261.无声的寂静的silent soundless still(静止的安静的)placid(平静的安静的平和的)tranquil(安静的平静的安宁的)serene(安静的安详的)262.避难所 shelter refuge263.滑滑行slide slip slither264.留出抽出spare set aside put apart265.世故的sophisticated worldly266.多余的redundant surplus(a&n)267.种品种种类breed species category variety sort kind type268.样本specimen sample(n&v)269.起源于originate from derive from stem from arise from(arise out of由……引起proceed from)270.撒洒spray sprinkle spatter splash shower271.反省reflect (on oneself) introspect272.屈服屈从give in to succumb to yield to submit to sell out to surrender to(投降)273.药(片)medicine pill drug tablet274.补充(物)supplement compliment(v&n)replenishment275.利用开发exploit tap276.疗法remedy therapy277.临时的短暂的temporary temporal brief momentary transient short interim278.素食者vegetarian vegan279.消灭eradicate wipe(out)exterminate uproot(根除)280.解雇开除fire dismiss discharge sack281.大量的considerable substantial282.温和的(气候)mild temperate283.事业career enterprise undertaking cause284.明显的obvious bold visible apparent patent285.不利的adverse disadvantageous286.可信的可靠的trustworthy reliable authentic genuine(真的 true authentic)287.事先预先in advance beforehand288.爆炸explode blow up bomb(轰炸)blast289.一阵风a blast of /a gust of wind290.典礼仪式礼节(ritual)ceremony rite291.条约公约协议treaty pact convention accord292.技艺skill feat craft293.差异difference diversity variety discrepancy distinction discrimination nuance divide disparity 综英书294.直立的垂直的vertical erect295.夸大夸张exaggerate overstate296.坦率的直言的explicit frank straightforward direct297.统治rule govern dominate(主宰)control(控制)298.小路path trail lane track299.废除不再使用abolish(法律习俗)do away with sth dispense with sth(摒弃不再需要)300.努力竭力try one's best to do;endeavour to do ; exert oneself301.奇迹令人惊奇的事物奇观wonder spectacle marvel302.选择挑选choose select pick opt for303.许可证permit license warrant304.处罚惩罚discipline(动词)punishment penalty(惩罚刑罚)305.继续做continue to do proceed to do proceed with sth306.粉碎smash shatter crash(碰撞)mince(切碎 chop剁碎绞碎)307.上涨上升rise increase soar rocket skyrocket mount(准备安排组织开展 mount a protest)surge(v&n) upsurge(名词急剧上升)leap shoot up308."分"分裂分开split bisect(对半分二等分)crack;劈砍:cleave hack chop ;sever切开309.镇压压制crack down crush suppress quash squash310.忍耐忍受tolerate bear stand endure stomach(一般否定句)311.堆(v堆积 &n堆)pile stack heap mass312.压力stress pressure strain313.涌surge billow gush314.遭受经受undergo suffer sustain315.调整调节tune(机器)adjust adapt316.可行的行得通的viable workable feasible practicable practical317.示威游行demonstrate march318.剧烈的激烈的severe intense violent fierce acute raging furious319.流产abortion miscarriage320.模范model role model example321.足够的充裕的enough adequate abundant rich ample plentiful322.酸的sour acid323.获得get gain attain obtain acquire324.渴望desire be desperate for aspire to sth/to do be thirsty for be dying to do/for sth anxiety to do/for325.边界边境boundary border(n&v bound) frontier326.小心的谨慎的careful cautious wary discreet prudent327.小的small tiny little mini compact minute328.逮捕arrest apprehend329.宣言announcement declaration proclamation330.使成为必要entail necessitate331.疲劳tiredness weariness(weary疲劳的疲倦的)fatigue332.同盟联盟alliance federation333.香料spice flavour condiment seasoning flavouring334.味道flavour taste savor(好的气味scent)odour(难闻的气味)335.赞扬praise compliment hail glorify336.放牧graze herd337.免于keep from be immune from338.直觉instinct intuition339.跳jump skip hop spring leap bounce340.垃圾废弃物rubbish garbage litter waste341.危险的hazardous dangerous harmful342.裂缝crack split leak343.独裁的arbitrary dictatorial344.商品commodity merchandise345.模仿mimic imitate simulate impersonate346.反对object disapprove oppose347.貌似有理的似乎正确的plausible(花言巧语的有道理的) specious(事实上不对似是而非)348.促销推销promote merchandise349.闲逛wander roam stroll350.严重severity gravity351.严厉的severe rigorous harsh352.优点美德advantage virtue goodness merit asset353.彻底的utter exhaustive354.显著的notable striking noticeable prominent355.压碎crush squash356.收入收益income proceeds357.无装饰的朴素的simple plain358.使害怕frighten scare alarm panic(使惊慌)359.突然的意外的sudden abrupt360.滥用abuse(滥用虐待mistreat) misuse misapply361.诽谤辱骂侮辱insult defame slander362.芽bud germ363.使烦恼烦扰annoy bother plague(给……造成长时间的痛苦/麻烦)364.挖掘dig burrow365.陶瓷陶器chinaware pottery porcelain(瓷器)366. 粗糙的rough harsh crude coarse367.同时发生的simultaneous coincident concurrent368.合作cooperate collaborate369.同意agree concur370.建议劝告advise suggest counsel371.极重要的关键的vital critical crucial372.猛冲迅速行进匆忙完成dash rush373.使忧虑worry distress depress(frustrate使抑郁使沮丧)374.破环damage destroy ruin devastate(彻底摧毁)wreck destruct 375.分离part separate divorce376.恶化worsen deteriorate exacerbate aggravate377.专门知识expertise professionalism378.虚弱的体弱的weak feeble infirm379.暴怒狂怒fury(furious) rage380.快速的quick rapid fleet fast381.欺骗cheat fraud deceit deception deceive deceitful fool(欺骗愚弄)382.供给供应provide supply furnish383.温和的gentle mild384.独创性originality ingenuity inventiveness385.插入insert interpose……between……and……(sandwich……between and )386.完整的intact integral387.固有的内在的intrinsic inherent388.引用cite quote invoke389.穿透穿过penetrate pierce390.含蓄的implicit implied pregnant391.结合与……联合conjoin in conjunction with392.预备的preliminary preparatory393.抢救rescue salvage394.挽救挽回retrieve(取回拿回 reclaim recover) salvage395.傻的愚蠢的foolish silly stupid fool396.孤单的独自的单独的lone(a lone mother 单亲母亲 sole parent 单亲家庭) solitary 397.溢出spill overflow398.使旋转rotate spin399.挤进塞进jam squash squeeze cram stuff (塞进塞满overflow) fill 400.空缺的未被占用的vacant unoccupied401.热带地区the tropics = the torrid zone402.静的不发展的static still stagnant dormant inactive inert403.平坦的flat even404.邻近的neighboring in the vicinity of adjacent405.尽管in spite of ;in the face of ;albeit406.弄乱clutter muddle407.证书证明书certificate credential408.与……有关be identified with in reference to409.争论debate dispute argument quarrel410.变形distort deform411.电梯升降梯:lift elevator 扶梯:escalator412.时代era age epoch413.唤起summon invoke evoke414.同伴companion associate colleague comrade415.对半分bisect(一分为二)halve416.暗示hint implicate417.臭名远扬的notorious infamous418.不可避免的inevitable unavoidable inescapable419.。

脉源词汇

脉源词汇

脉源词汇觉得这些词汇从发生的角度由浅入深的把写作脉络勾勒了出来,很不错,供大家拷贝。

从无到有开始Begin, start, begin with, spring, start up, set off on, break out, strike up, originate from,;Initiate, launch, originate, sprout; unfold; unleashoutset, onset,Rudimentary, elementary,出现Appear, appear to be, emerge, arise, loom, turn out, show up, com out, come into sight/view, come forth发生Happen, occur, take place, come about,Happening occurrence产生,创造create, produce, bring about, yield, give birth to, bear, bring into being, generate, beget,germinate;Invent, innovate, renovate, plan, design, imagine, conceive, devise, formulate, imagine, envision,建立Found, set, built up, construct, institute, constitute, set up, establish制造,组成Make, make up, produce, construct, turn out, manufacture, form, shape, compose, compile, concoct, fabricate生长壮大复制,繁殖58Copy, duplicate, reproduce, multiply.发育,发展Grow, develop, breed, bring up, nurture, cultivate, hone, raise, foster, (主动) Develop, advance, progress, move forward, go forward, proceed(自我成长)Burgeon, flourish, thrive, bloom, blossom, boom, prosper;保持,延续Continue, last, carry on, keep on, keep, remain maintain retainPerpetuate,Persevere, stick with, insist on, persist in,Continuous, incessant, permanent, constant, steady, unbroken, perpetual, everlasting, eternal, lasting, unending, uninterrupted, undying, immortal, invariable,存在,生存Exist,found, stand, lay in, be rooted in,be embedded in,Substance, matter, object, material, stuff, things, entity,individual, creature, beings,Topic, subject, issue, theme, gist, item, content, point,Extant, existing, in existence, substantive, ubiquitous, omnipresent, universal, survive,outlive,outlast, remain alive,Endure, undergo,从有到无结束,停止53stop,finish, be over, cease, discontinue, wind up, bring to an end(close, halt), end,come to an end, end up,terminate,quench,quell,run out, expire, conclude adjourn/dissolve/lull/subvert,abortaive,Surcease, cessation,impasse, deadlock, logjam, stalemate,Ultimate, final, eventual,Abeyance, suspend, interruption, brake, halt, pause,死亡,毁灭Perish, annihilate, kill, exterminate, take life, slay, hatchet, slaughter, assassinate, famish, smother, throttle, strangle, stifle, decimate,Die, pass away, perish, expire, run out,decease, death, demise,Defunct, moribund, dying,Fatal, formidable, deadly, fatality.取消,废除550Cancel, annul,call off, do away with,Abolish, desuetude, disuse, abandon, repeal, revoke, invalidate, rescind, nullify Obsolete, out of date, outmoded, out of fashion, old-fashioned,除去551Remove,erase,delete, extinguish, exterminate, eliminate, eradicate, extirpate, efface,clear away, throw away, do away with, wipe out, get rid of , rule out,Obliterate, expurgate, expunge, purify, purge,破坏Destroy, damage, wreck, devastate, raze, ravage, knock down, demolish, vandalize, tear down, ruin, spoil, dilapidate,Perdition,detrimental,harmful, injurious,topple down/inclement/伤害Damage Bruise, mar, maul, do harm to, injure, wound, hurt, impair, harm, hurt, wound, harm, break, fracture, maim, cripple, mangle, mutilate;cut, gash, fracture, break灾祸Disaster, catastrophic, calamity, cataclysm, carnage, massacre, holocaust, decimate, wreck, accident,Misfortune, hapless, mishap,逐渐消亡Rot way, perish, decay, disintegrate, decompose, deteriorate, molder, aggravate, worsen, exacerbate, corrupt,Rotten, decayed, corrupt, damaged;decrepit ,decrepitude, dilapidate状态之改变正面能力,强,权力Enable, facilitate, empower, entitle, enhance,Strengthen, reinforce, sustain, countenance, consolidate,Able, be capable of doing , competent, potent, omnipotent, puissant, resourceful Ability, capability, capacity, skill, forte,competence, facultyIntelligence, aptitude, flair, talentClever, bright, talented, astute, wisdom, wise, smart, acumen,Hegemony, puissance, resource, power, energy, authority, influence, impact, supremacy, potency, strength, force,vigor;大Aggrandize, amplify, augment, broaden, widen, extend, enlarge, magnify, enlarge, Exaggerate, overstate, overstress, overemphasize,多,增加Enrich, increase, add to, abound, fill, fill up, replenish, stock up, add, put in, raise, Accrue, mount up, augment, accumulate, riseAbundant, plentiful, more than enough, profuse, copious, rich, wealthy, generous, numerous, in great numbers;sufficient, enough, adequate, ample, as much as necessary,Increment, accretion, growth, augmentation,高Raise, lift up, improve, enhance, elevate, escalate, heave, heighten, hoist,Rise, increase, ascend, mount, go up, climb scale, jack up, skyrocket, surge, upsurge High, tall, in height, lofty, towering, lanky;Height, stature, elevation, altitude有助Help, assist, aid, subsidize, help to, conduce to,, contribute to, function to, be of assistance, lend a hand, facilitate, enhance,Helper, aide, assistant, accessory, ancillary, accomplice, auspices,支持Support, bolster, boost, brace, buttress, espouse, proponent, underpin, embrace, exponent,快216Accelerate, hasten, speed up, quicken up, expediteRun, scurry, scuttle, scamper, prance, gallop, sprint, scud, Dart, fleet, rush, Fast, quick, rapid, swift, expeditious, speedy, fleeting, briskSpeed, swiftness, pace, velocity, rapidity, tempo, rate, quickness, promptness,有效,起作用Effective, efficient, effectual, successful, useful, helpful, functional, applicable, operative, working, active, functioning, in operation, in use,Available, serviceable,Impact, influence,自由,解脱Release, free, set free, set off, liberate, unshackle, unfetter, emancipate, manumit, disentangle, untangle, extricate,unravel,中性变Change, alter, modify, vary, turn, become, adjust, amend, transform, distort, modulate, transmute, shift, transfigure,Fluctuate, move, revolutionize, alternate, shiftDiversified, volatile, fickle, mercurial, protean, erratic, eccentric, irregular, inconsistent,Changeable, unsettled, variable, malleable, mutable,Change, alteration, variation, modification, transition, renovation, recondition, mutation;修改Redress, rectify, revise, emend, renovate, innovate, recondition,负面弱Weaken, enervate, vitiate, sap, impair, emaciate, attenuate, diluteWane, sag, fade, flag, deteriorate, exacerbate, wither, blight, dry up, wilt, sere, sear, shrink, shrivel,Weak, feeble, effete, wan, frail, lacking in strength, impotent, feeble, lethargic Infirmity, weakness, decadence, decadent,减少,降低Lower, reduce, decrease, drop off, abate, decline, dwarf, dwindle, rarefy, curtail, shorten, abridge, truncate, dock, decline, slump, eclipse, subside, shrink, ebb, Diminish, lessen, debase, dilute, moderate, die down, grow less intense, cut down, ebb, cut back,慢Decelerate, slow, slow down, retard, hold back,Slow, sluggish,Postpone, put off, delay, defer, procrastinate, adjourn,Dilatory, tardy, slack, sluggish,平息reconcile, comfort, placate, conciliate, reassure,allay, calm, console, soothe, pacify, assuage, mitigate, palliate, salve, temper,palliation, reconciliation,禁止,限制Prohibit, proscribe, forbid, ban, restrain, interdict, overrule, veto, stop fromLimit, restrict, confine, blockade, fetter, shackle, circumscribeProhibited, forbidden, banned, illegal, outlawed, proscribed, taboo;Durance, taboo,控制, 抑制Control, wield, hold, steer, helm, maneuver, manipulate, dominate, regulate, rein in, direct, rule, govern, reign, regimentCurb, bridle, yoke, restrain inhibit smolder, suffocate,refrain from阻碍455Hinder, hamper, check, stunt, impede, block, obstruct, retard, interrupt, hold back, prevent from, forestall, keep from, deter from, discountenance, lumber, thwart, stem, stymie, frustrate, stump, stem,Entangle, enmesh, ensnare, entrap,Barrier, obstacle, obstruction, impediment, setback, hindrance, hurdle, blockade, blockage,morass, predicament, plight, straits, quandary,strait,预防Forestall, proselytize, preclude, prevent,干预432Interfere, intervene, intercede, meddle, annoy, vex, nettle, perturb, disturb, discomfit, molest, pester, bother, annoy, harass, intrude,Mediate,Inroad, raid, assail, assault, attack, trespass, infringe, attack, foray, intrude, encroach, Turbulence, disturbance得到,付出付出给Give, offer, endow, endue, present, bestow, provide, supply, furnishImpart, instruct, apprise, teach, instill, inculcate,Proffer, confer, donate, contribute, subscribe, bequeath,Issue, flow out, release,支出Cost, spend, pay, pay out, expend, disburse,Prodigal, profligate, splurge, spendthrift, dissipatefrugal, scrimp, skimp, abstemious,Expenditure, subvention,归还,偿439Return, hand out, restore, reciprocate, remunerate, revert,Compensate, reimburse, indemnify, expiate, atonement,Salary, remuneration, Emolument, honorarium,分配Distribute, allocate, issue, hand out, apportion, allot, dispense, ration, allot, assign, designate;Distribution, dispensation ration, allotment施加impose, entail, exert, inflict, suppress, subjugate, compress ,repress, coerce,使满Suffice, satiate, satisfy, cater, sate, meet requirement, gratifySuffuse, implant, instill, infuse, fill, impregnate,放弃Relinquish, give up, disclaim, abdicate, abjure, waive, renounce, recant, wean, forsake, abdicate, desert, forswear, renounce, repudiate, forgo, disown, disavow, abandon Renunciation,获得得到Get, receive, Accept, attain, acquire, obtain, gain, repossess, retrieve, procure, catch, Earn, profit, embezzle, peculate, defalcate, graft, appropriate,Obtainable, accessible, receptive,Receiver, recipient, procurement夺Deprive, take away, exact, extort, dispossess, bereave, divest, strip,Loot, ravage, ransack, sack, despoil, plunder, rapine, snatch, ,exploit, distill, Confiscate, impound, sequestrate, forfeit, expropriateExaction, depredation, spoliation,吸引Attract, appeal, fascinate, draw, charm, intrigue, enchant, tempt, allure, enchant, enthrall, rivet, fix, spellbind, intoxicate, engross, occupy, captivate, enamor, Attractive, appealing, charming, pleasing, attractiveness, fascination, charisma, personal, magnetism, attraction, fascination,包含510Contain, consist of, comprise, cover, encompass, span, contain, encompass, subsume, consist of, include, involve, embroil, implicate, ;Configuration component,需要,Require, call for, need, demand, necessitate,Necessary, required, requisite, essential,Requisite, prerequisite, requirement, precondition,使使Cause to be, make, lead to, render, turn into, trigger, activate, cause,要求,请求,Request, ask, entreat, demand, petition, appeal toSolicit, invoke, plead, implore, beseech, adjure,Dictate, command, mandate, order, instruct, charge,Imperative, essential, compulsory, mandatory, urgent, obligatory,Request, requisition, petition, invocation;促使,劝说,Advise, urge, argue, advocate, persuade, sway, influence,Convince, expostulate, exhort, hortative刺激,激发,鼓励Stimulate, activate, spur, incite, agitate, inspire, arouse, excite, provoke, actuate, incite, foment, stir up, trigger, Kindle, enkindle, igniteencourage, motivate, invigorate, prompt, instigate,Impetuous, impulsive;Drive, motivation, incentive, inducement, impetus推动,驱动,迫使Push, drive, propel, force, oblige, propel, compel goad威逼利诱欺骗,伪装Deceive, dupe, cheat, swindle, hoodwink,Disguise,Duplicity, artifice, chicanery, deception, scheme, subterfuge, duplicity.引诱Beguile, lure, tempt, allure, entice, tantalize, coax, delude, cozen, beguile,, Guile, deceit, cunning, wile, trickeryWily威吓Threaten, menace, intimidate ,hector, frighten, bully,Threatening, menacing,Threat, menace允许,承认Allow, let, permit, licenseAllowance, license, permission, consent, sanction, authorization心理想要期望Expect, look forward to, wait for, look ahead to, suppose, anticipate, await欲望,欲求Wish, want, desire, long, yearn, aspire, crave, hanker, covet:Desirous, eager, avid, greedy, acquisitive, much desired, coveted, ambitious, enterprising;Longing, aspiration, yearning, ambition, avarice, desire for, appetite, desire意图Intend, tend to, mean, plan, be inclined to, predispose, resolve, prone to, apt to, disposed to, attempt to, aim to, be set to, have in mind, slantIntentionally, purposely, deliberately, consciously,Intention, motive, tendency, trend, proclivity, inclination, acclivity declivity, Liable, inclined to, willingly, likely不愿意Waver, hesitate, oscillate, vacillate, boggle, pause, falter,reluctant, unwilling,irresolute, indecisive, undetermined, uncertain, undecided, unsure,Reluctantly, unwillinglyReluctance, unwillingness认知感觉,察觉Sense, feel, savor, be conscious of, be aware of, regain consciousness, perceive, Cognize, regard,Detect, identify, notice, recognize, observe,Heed, pay/give heed to, take heed/notice of, notice, pay/give attention to Conscious, aware capable of feeling, sentient, percipient, cognizant, Consciousness, awareness, feeling, sense, sensation,Attention, heed, notice思考Think, consider, ponder, speculate, contemplate, reflect, muse, ponder, contemplate, muse, meditate, ruminate, chew, deliberate, take into account, take into consideration, cross one's mind, flash across one's mind, pass through one's mind, occur to sb thoughtful, meditative, pensivethought,consideration,reflection,contemplation理解know, understand, realize, appreciate, grasp, apprehend, figure out, be informed about, read, make out, go one’s idea across, decipher, decode, recognize, comprehend, be acquainted with, be familiar with,忽视,忘记, 没感觉Forget, not remember, neglect, ignore, overlook, disregard, pay no attention to, take no notice ofCondone, excuse, and forgive, pardon, absolve, exonerate, extenuate,Oblivious, remiss, delinquent, negligent,Neglectful, forgetfulOblivion, remission, omission.Amnesia, amnesty, inattention, oversightIgnorant, unknown,unconscious, unaware, insensitive, unresponsive清楚clarify, elucidate, shed light on, illuminate, make clearexplicit, overt, precise, unambiguous, plain, clear, unequivocal,clarity, clearness, lucidity, transparency, simplicity, precision.迷惑Confuse, puzzle, muddle, bewilder, perplex, baffle, nonplus, flummox, disconcert, confound, mix up, fluster, obscure, obfuscate, perplexQuandary, dilemma, plight, predicament,态度正面赞成,同意Approve, endorse, grant, confirm, ratify, agree with, consent, endorse, approbate, assent, approve, accord, agree, accede, resonate,Unanimous, in full accord,Approval, agreement, concurrence, unanimity, approbation. Uniformity, consistency, endorsement, confirmation, ratification, sanction,allow, permit, let, consent to肯定,相信Certain, sure, ascertain,positive, confident, convinced, assured,Inevitable, certainly, surely, positively, definitely, confidently, assuredly, inevitably, undoubtedly, unquestionably, unequivocallyBelieve, trust, entrust, have faith in,fidelity, loyalty, faith, affidavit, conviction,喜欢,赞美Love, be fond of, like, favor,worship, adore,Laud, praise, commend, extol, exalt, exult, eulogize, honor, pay tribute to,hymn, paean, carol, psalm, encomium,不喜欢,Loath, hate, dislike, abhor, repulse, repel, abominate, detest,Heinous, odious, hateful, repellent, repulsive, repugnant obnoxious,Aversion, odium, aversion, revulsion, abhorrence,不同意,反对Disagree, dissent, reject, and disallow discord,Contradict, gainsay, say the opposite to, oppose, counter, be in opposition to, go up against, defy, controvert, impugn,Inconsistent, contradictory, in disagreement, at oddsDisharmony, dissonanceOpposing, dissenting, opposite, contradictory, override contrariwise, oppositely;Dispute, argue,反驳Refute, rebut, retort, deny, confute, contest, disprove羞辱,贬义Embarrass, humiliate, disgrace, dishonor, mortify, demean, discomfit, degrade, undermineEmbarrassed, ashamed, unembarrassed, unabashedHumiliation, chagrin忧虑Worry about, fret over, feel anxious, uneasy about, be concerned about,fret, agony,Anxious, uneasy;Anxiety, concern, uneasiness, disquietedness, nervousness疑问,不相信Doubt, query, question, inquiry,Discredit, distrust, disbelieve, mistrust, suspect, be suspicious of, have doubts about Doubtful, misgiving, skeptical, dubious, incredulous,;Doubt, incertitude, questioning, skepticism, implausibility, incredibility批评,谴责Criticize, censure, condemn, denounce, attack, rail, rebuke, blame, reprove, reprimand,reproach; diatribe, reproof, reprimand分久必合,合久必分合,和同,等, 似Accord, match, equal, like, resemble, approximate,Same, unified, matching, much the same, be similar to, akin to, the same as, equivalent, identical parallelEquivalent, congruity, concord, parallel, similarity, parallelism, tantamount, tally, Resemble, bear a resemblance to, be like, look like, simulate, take after, imitate, mimic, copy, emulate,比较Compare, contrast, weigh against, judge against, balance, parallel Comparatively, relatively适合Suitable, fit, suited, proper, right, appropriate, apposite, apropos, opportune, fitting, apt,suitably, properly, rightly, appropriately, fittingly, aptly,相容Compatible, well-matched, well-suited, attuned, companionable, congenial, affable, amicable,Accommodate, Harbor, lodge,陪伴Accompany with, go along with, go together with, go with, come with, keep sb. Company, join, escort, convoy, cling to合作,合并Work together, cooperate, come together, and collaborate, join forces, team up,Merge, unite, connect, bond, bring together, combine, associate, amalgamate, swallow up, become one, come together, Affiliate, annex, coalesce, incorporate, integrate, put together, join together.Involve, embroil, include,Weld, join, solder,Merger, combination, solidarity, coalition, cohesion, conglomeration, agglomeration, confluence, Rapport, rapprochement, inseparable,聚集Gather, accumulate, amass, collect, pile up, heap up, compile, assemble, garner, convene, summon, organize, call together,swarm, throng, teem, crowdRally, confer, muster, congregate, aggregate, put together, amass, convoke, convene, collect a supply of;Collection, group, multitude, flock, herd, array, accumulation, accretion, backlog.Gregarious,联系,依靠Link, relate, connect, associate, correlate, attach, fasten, clinch, cling to, tie, adhere, affiliate, pertain, trace;Relevant, pertinent, germane,Link, bond, nexus, linkage, relationship, attachment,Rely on, trust, depend on, count on;Reliable, foolproof, dependable, independent, sovereign;trust, reliance, dependence,整体,全部,广义Complete, total, entire, full, whole, thorough, comprehensive, all-round, versatile, plenaryGenerally, entirely, fully, wholly, thoroughly, exhaustively, usually, largely, mainly, mostly, for the most part, on the whole, in generalAll over, throughout;交易,遇见,互相Trade, exchange, deal, do business, transact, interact, intertwine, swap, switch, Trade, commerce, interplay, commodity, goods, merchandise, transaction, interaction Meet, encounter, run into, run across, come across, happen to see, discover; Mutual, reciprocal, vice versa,遵守,认同Obey, comply with, act upon, follow, meet the terms, act in accordance, submit, observe, conform,Accordance, tractable, obedient, ductile, compliant, docile, manageable, tame,分分开,部分Divide, break up, separate, undo, seclude, sever, diversify, bifurcate, ramify, disconnect, cede, sunder, asunder, part, partition, isolate, part, detach,Exclude, occluded, preclude, segregate, secludeDisband, dismiss, scatter, estrange, segment, cleave, rift, disintegrate, split up, fall apart, collapse,Fission, crevice, partition, detachment, secession,Section, aspect, feature, facet, respect, side, sector, division, part, segment, fragment, piece, portion背离Digress, deviate, diverge, astray, depart, swerve, deflect, defection, apostate, betray, divagate, secede egress,Perfidious, infidelity, disloyal, unfaithfulness, disaffected,不同Different, dissimilar, unlike, incongruous, discordant, disparate,Multifarious, motley, various varied, diversified,Diversity, shade, nuance, disparity, discrepancy, difference, variance, multiplicity,不相容,不适合Incompatible, mismatched, unsuited, discordant, inharmonious, unsuitable, improper, wrong, inappropriate, inopportune, unfitunsuitably, inappropriately,违背,对立Contravene, defend, break, breach, disobey, counter, resist, violate, defy, flout, infringe,infraction,对立争,斗,努力Compete, via, contend, struggle, wrestle, tussle, challenge, fight against, emulate, rival, conflict, contest, strife,confront, face up to,Strive, make an effort, endeavor to, try to do, attempt to do, struggle;Effort, attemptantagonistic, hostile, friction躲避Avoid, escape, keep away from, stay away from, shun, wince, flee, run away, flight, parry, evade, dodge, sidestep,elude, shirk,成Win, succeed, triumph, prevail, outstrip, outwit, transcend, exceed, surmount, overcome surpass,Fulfill, complete, accomplish, finish, achieve, reach, approach, realize, soar, Subdue, suppress, override, overrule, subvert, topple,Consummation, achievement, feat, attainment, accomplishment.Accessible, reachable, attainable, obtainable, approachable,败Fail, be unsuccessful, be abortive, flunk, founder, bungle, sink, be fruitless, bungle, blunder, bumble, muffFailure, abortion, crashstranded,处理对付,处置Deal with, cope with, and dispose, handle, manage, process,Disposition选择Choose, select, favor, prefer, pick,传递Transmit, pass, hand on, transcribe, transfer, move, convert, convey, send, ferry, transport,Impart, inculcate, instruct, teach, inform, apprise, pass ontransfusion,采用,利用Make use of, use, employ, utilize, exploit, consume, harness, assume, take on手段,工具By means of, by way of, by virtue of , method, manner, means, device, instrument, facility, implement, apparatus, appliance, mechanism, gadget, utensil, tools, contrivance, maneuver, tactic, mean, expedient, stratagem, tact, ploy,artifice, chicanery, scheme, plan, project, program行为,Act, perform, behave, work, serve as, operate, run, function to, conduct;Be engaged in, carry on, indulge in, participate, endeavor to, take part in, devote to, dedicate to,Behavior, demeanor, conduct, action, performance,信息处理表达说,表达say, tell, talk, speak, utter, express, voice, state, articulate, pronounce, emote, Declare, pronounce, claim, announce, address, intimateEquivocate, prevaricate, prattle, stammer,chat, discuss, converse, bargain, negotiate,talk, chat, discussion, debate, conversation, colloquy提出Suggest, propose, present, put forward, recommend, advocate, advise, posit, aver, allege, postulate, propound, tender,Hint, imply, insinuate, allude,描述Describe, depict, illustrate, limn, recount, portray, represent, define, characterize, delineate, sketch out,;description, version解释,说明Explain, interpret, explicate, detail, clarify, make clear, construe, misconstrue, elucidate, shed light on, decipher,, expound, disabuse, explain in detail, account for; Exposition, exhibition, connotation, exegesis, gloss annotate,表明Show, demonstrate, evince, indicate, display, exhibit,获取信息观察,探求observe, view, see, spot, watch, notice, make out, perceive, bring attention to, be aware of,distinguish, discern, detect, scrutinize, monitor, study, sight, inquire, probe, search, explore,Search, grope, probe, plumb, fathom, research,quest;调查,检查Inspect, examine, scan, study, check, investigate, censor, peruse, look into, look over, scrutinize, survey,Inspection, examination, census, censor, investigation, scrutiny, survey, inquiry, census, poll纪录,记载Record, register, document ,write down, take down, put down, note down, detail, keep details,逻辑分析证明Analyze, consider, infer, extrapolate, prove, justify, confirm, verify, validate, testify, attest, authenticate,substantiate, give evidence, corroborate假设Presume, assume, suppose, imagine, premise, surmise,推断Induce, infer, deduce, reason, derive from, ratiocinate, conclude,因果result from, result in, according to, attribute to, ascribe to, credit to, account for, derive from, arise from,proof, evidence, inference, conclusion,convince,cogent, sound, logical, rational,真,正确True, right, correct, proper, real, actual, genuine, veritable, veracious, authentic truly, really, actually, in fact, authentically, realistically, pragmatically;genuinely veraciously,faultless, impeccable, in the right wayTruth, canon, criterion, norm, axiom, veracity. Rationale, truism, maxim, correct, revise, rectify假,错False, wrong, incorrect, fallacious mistaken, erroneous, unreal, errant, faulty Fake, sham, phony, pretended, simulated, pseudoMistakenly, erroneously;Mistake, error, fault, fallacy, misconception, illusion;take A as B, confuse A with B, mistake A for B, erroneously identify A as B, falsify,发现, 揭示Discover, find out, learn, reveal, disclose, unveil, expose, divulge, make known, debunk, declassify, decode,decipher, translate, make out, revelation,其它强调的,Absolutely, incontrovertible, indispensable,indisputable, inalienable, indubitable, incontestable, irrefutable, incontrovertible;重要的Consequential, imponderable, paramount, substantial, major, significant, important, leading, major, dominant, predominant, prevailing, key, pivotal, decisive, critical, crucial, basic, fundamental, radical, essential, primary, integral, inherent, indispensable, necessary优缺点Advantage, benefit, advantageous, valuable, precious, positive, positive aspect, helpful, asset, valuable quality.Disadvantage, drawback, weakness, shortcoming, downside, negative aspect, unfavorable feature.明显的,突出的,优秀的,杰出的Obvious, apparent, evident, conspicuous visible, noteworthy, noticeable, notable, manifest, outstanding, remarkable, salient, prominent, eminent, distinguished, striking, extraordinary, excellent, monumental, phenomenal,主要mainly, chiefly, principally, predominatly, basically, fundamentally, primarily, inherently,。

英语恶俗词汇替换)

英语恶俗词汇替换)

英语恶俗词汇替换Aabandon 、quit 放弃(abandon doing sth.) 换换 give upabide 、endure 、stand 、tolerate 忍受,容忍 换换bear 、put up withability 、competence 、faculty 能力,技能(the ability to do sth.) 换换 skillable 有能力的(be able to do sth.=be capable of doing )换换canbe absorbed in 专心于,全神贯注于abundant 、a mass/plenty of 、a larger amount of+不可数、enormous 大量的 换换 a lot of 、a large munber of 、a great deal ofacademic curriculum (course )大学课程accelerate 、boost 、contribute 、reinforce 、enhance 、evolve 、foster 改善,加强,促进 换换 promote 、improve 、 advance 、strengthenhave/gain access to 可以获得(或接近),有机会 换换opprotunityacclaim 向。

欢呼(及物动词,后直接加宾语) 换换 cheer (及物&不及物)accomplish 、complete 完成 换换finishaccordingly 因此 换换thus 、so 、thereforeaccount for 、interpret 解释 换换explainon account of 、due to 、hence 由于 换换because ofaccountable 有责任的 换换responsibleaccurate 准确的 换换correct (正确的)achieve success 获得成功achievement 成功、成就 换换 successactive 、positive 活跃的,积极的 被被换换energetic 、affirmativeIt is acknowledged that..,是大家所公认的 换换As we all know 、It is well-known thatacquaintance 、buddy 朋友 换换friend 、matedo a good deed 做一件好事add 增加 换换increaseaddress 致词,向。

elementary statistics 10th 解答

elementary statistics 10th 解答

elementary statistics 10th 解答引言概述:Elementary Statistics 10th Edition is a comprehensive textbook that provides an introduction to the fundamental concepts and techniques of statistics. In this article, we will delve into the various aspects covered in the book, highlighting the key points and explanations provided.正文内容:1. Descriptive Statistics1.1 Measures of Central Tendency: The book explains the concept of central tendency, including mean, median, and mode. It further elaborates on their calculations and interpretations.1.2 Measures of Dispersion: This section covers the measures of dispersion, such as range, variance, and standard deviation. The book provides detailed explanations on how to calculate and interpret these measures.2. Probability2.1 Basic Probability Concepts: The book introduces the fundamental concepts of probability, including sample spaces, events, and probability rules. It explains the calculation of probabilities using both theoretical and empirical approaches.2.2 Conditional Probability: This section focuses on conditional probability and introduces concepts like independence and dependence of events. The book provides examples and explanations to help readers understand these concepts.2.3 Probability Distributions: The book covers various probability distributions, including discrete and continuous distributions. It explains their characteristics, probability density functions, and cumulative distribution functions.3. Sampling and Sampling Distributions3.1 Simple Random Sampling: The book explains the process of simple random sampling, including its advantages and disadvantages. It also discusses methods for selecting random samples.3.2 Sampling Distributions: This section covers the concept of sampling distributions, including the central limit theorem. The book provides examples and explanations to help readers understand the concept of sampling distributions.4. Estimation and Hypothesis Testing4.1 Point Estimation: The book explains the concept of point estimation, including methods for estimating population parameters. It covers topics such as the method of moments and maximum likelihood estimation.4.2 Confidence Intervals: This section focuses on confidence intervals and their interpretation. The book provides step-by-step procedures for constructing confidence intervals for population parameters.4.3 Hypothesis Testing: The book covers hypothesis testing, including null and alternative hypotheses, type I and type II errors, and p-values. It provides examples and explanations to help readers understand the process of hypothesis testing.5. Regression and Correlation5.1 Simple Linear Regression: The book introduces simple linear regression and explains the concept of the least squares method. It covers topics such as regression equations, coefficient of determination, and hypothesis testing in regression.5.2 Correlation: This section focuses on correlation analysis and explains the calculation and interpretation of correlation coefficients. The book also covers topics such as the coefficient of determination and the significance of correlation.总结:In conclusion, Elementary Statistics 10th Edition provides a comprehensive introduction to statistics, covering various topics such as descriptive statistics, probability,sampling, estimation, hypothesis testing, and regression analysis. The book offers detailed explanations, examples, and step-by-step procedures to help readers understand and apply statistical concepts. Whether you are a student or a professional, this textbook serves as a valuable resource for learning and mastering elementary statistics.。

七夕节介绍中英文

七夕节介绍中英文

七夕节介绍中英文篇一:情人节英语介绍There are varying opinions as to the origin of Valentine’s Day. Some experts state that it originated from St. Valentine, a Roman who was martyred for refusing to give up Christianity. He died on February 14, 269 , the same day that had been devoted to love lotteries.关于情人节的起源有许多种说法。

有关人士认为情人节是一个名叫桑特瓦伦丁的人士发起的。

他是罗马人,因为拒绝放弃基督教而于公元前269年2月14日惨遭杀害,这一天也正好是全城盛行彩票抽奖的日子。

Legend also says that St. Valentine left a farewell note for the jailer’s daughter, who had become his friend, and signed it “From Your Valentine”. Other aspects of the story say that Saint Valentine served as a priest at the temple during the reign of Emperor Claudius. Claudius then had Valentine jailed for defying him. In 496 Pope Gelasius set aside February 14 to honour St. Valentine. 而另外一种说法更具有传奇色彩,相传桑特瓦伦丁曾留下一本日记给了狱卒的女儿,署名为“你的情人”,据说这名狱卒的女儿就是桑特瓦伦丁的情人。

小学寄明信片的英语作文题

小学寄明信片的英语作文题

小学寄明信片的英语作文题Writing Postcards in Elementary SchoolMemories of childhood often evoke a sense of nostalgia and wonder. For many of us, one such cherished memory is the experience of writing postcards during our elementary school years. This simple yet meaningful activity not only fostered our language skills but also cultivated a deeper connection with the world beyond our immediate surroundings.In my own elementary school days, the annual postcard writing project was eagerly anticipated by students and teachers alike. The excitement would build as the school year progressed, and we would eagerly await the time when our teachers would distribute the postcards and guide us through the process of composing our messages.The first step in this endeavor was the selection of the postcard itself. Our teachers would provide us with a variety of options, ranging from scenic landscapes to iconic landmarks, each one offering aglimpse into the diverse cultures and regions of our world. This simple act of choosing the right postcard allowed us to exercise our creativity and personal preferences, setting the stage for the writing that would follow.As we carefully selected our postcards, the next challenge was to craft the perfect message. Our teachers would encourage us to think beyond the simple "wish you were here" and to instead compose thoughtful, engaging content. We would ponder the recipient of our postcard, whether it be a family member, a friend, or even a pen pal we had yet to meet, and tailor our words accordingly.The process of writing the postcard was a delicate balance of language skills and personal expression. We would meticulously choose our words, striving to convey our thoughts and feelings in a clear and concise manner. For many of us, this was our first foray into the world of written communication, and the experience proved invaluable in honing our English language abilities.One of the most rewarding aspects of the postcard writing project was the opportunity to learn about different cultures and geographic locations. As we composed our messages, we would often research the destination featured on our postcards, eager to share interesting facts and insights with our recipients. This exploration of the world beyond our immediate community not only broadened our horizonsbut also instilled a sense of global awareness and curiosity.Moreover, the act of sending a postcard fostered a deeper connection with the recipient. In an era before the ubiquity of instant messaging and social media, the postcard represented a tangible link between the sender and the recipient. The anticipation of the recipient receiving our message and the joy of knowing that our words had traveled across distances to reach them was a truly rewarding experience.As we diligently addressed the envelopes and affixed the necessary postage, we would feel a sense of pride and accomplishment. The knowledge that our postcards would soon be on their way to loved ones or distant acquaintances filled us with a sense of purpose and responsibility. We understood that our words had the power to brighten someone's day, to forge new connections, or to simply convey our affection and well-wishes.The impact of the postcard writing project extended beyond the classroom walls. For many of us, the experience of writing and sending postcards became a lifelong habit. As we grew older, we found ourselves continuing this tradition, whether it was sending postcards from our own travels or maintaining correspondence with friends and family members. The act of putting pen to paper and sharing our thoughts and experiences with others remained ameaningful and cherished practice.In the digital age, where instant communication and virtual connections have become the norm, the art of writing and sending postcards has, in many ways, become a lost tradition. However, the enduring value of this experience cannot be overstated. The lessons we learned, the connections we forged, and the memories we created during those elementary school postcard writing projects continue to shape us, even long after our school days have passed.As we look back on our childhood, the act of writing postcards stands out as a testament to the power of simple yet meaningful experiences. It was a time when we learned to express ourselves, to explore the world, and to cherish the connections we made with others. The postcards we sent may have long since been lost or forgotten, but the indelible mark they left on our lives remains, a reminder of the lasting impact that even the smallest of gestures can have.。

计算机专业英语

计算机专业英语

计算机专业英语----shuyingAabort vi.异常中断n.终止计划(任务) abstract adj.抽象的Access 微软公司生产的数据库软件access n..通路,访问,入门vt.存取,接近accessible adj.易接近的,可以达到的acclimate v.适应account n.计算,帐目accurate adj.正确的,精确的active adj.活动的,被激活的Active Data Objects 活动数据对象ActiveX 微软倡导的网络多媒体对象技术actual adj.实际的,真实的,现行的,目前的adapter n.适配器additional adj.另外的,附加的,额外的address n.地址vt.从事,忙于Adminstrative adj.管理的,行政的Administrator n.管理员advancement n.前进,进步advantage n.优势,有利条件advertisement n.广告,做广告advocate vt.提倡algorithm n.算法allocation n.分配,安置although conj.虽然,尽管amazing adj.令人惊奇的analog n.模拟analyze vt.分析,分解animation n.动画,活泼,有生气anticipate vt.预期,期望appeal vi.求助,要求appearance n.外观application n.应用,申请,请求appropriate adj.适当的architectural adj.建筑上的architecture n.建筑,结构archive n.档案库arithmetic n.算术arrangement n.排列,安排assembler n.装配,汇编程序assembly n.汇编,集会,大会assistance n.协助,援助,补助assistant n.助手,助教attach vt.附加,添加,系上,贴上attachment n.附件attribute n.属性,品质audio card 声卡author n.作家,创造者autocorrect v.自动更正automate v.使自动化,自动操作automation n.自动化available adj.可用到的,可利用的,有用的avoid v.避免awareness n.知道,晓得Bbasic adj.基本的basically adv.基本上,主要的basis n.基础,基本bearer n.承载人,送信人,负载的人benign adj.良性的,良好的,仁慈的betray vt.出卖,背叛,泄露,漏出……的迹象binary adj.二进制BIOS abbr.[计]基本输入输出系统Basic Input Output Systembit n.位,比特(计算机用语)bizarre adj.奇形怪状的block n.木块,石头,块breakthough n.突破brochure n.小册子browse vt.浏览budget n.预算bug n.臭虫,病菌,虫子bug-free adj.没有程序错误buggy adj.多臭虫的(程序错误的意思) bulletproof adj.防弹的bunch n.串,束v.捆成一捆bundle v.捆扎business to business(B to B,B2B)商业对商业button n.按钮Ccable n.电缆calculating speed运算速度calculator n.计算器campus n.校园capability n.能力capacitor n.电容器cassette n.盒子,盒式磁带categorize vt.加以类别,分类category n.种类caution n.警告CD-ROM n.光盘驱动器challenge n.挑战character n.字母characteristic n.特征chief adj.主要的,首要的chrominance n.色度circuit n.电路classify v.把……分类click v.单击,点击client n.顾客,客户,委托人client/server 客户/服务器clipboard n.剪贴板clock n.时钟close button关闭按钮clumsy adj.笨拙的collaborate vi.合作collision n.碰撞,冲突combat v.与…战斗,和…斗争combination n.结合,联合,合并,化合,化合物command n.命令,掌握,司令部commerce n.商业commodity n.日用品common adj.共同的,普通的commonly adv.普遍地,一般地communicate v.沟通,通信,相通communication n.传达,信息,交通,通信community n.共同体,社会compatipility n.兼容性,相容性compiler n.编译器,汇编者,编译程序compiling n.编译complex adj.复杂的component n.分量,成分,元件,组件,部件compression n.压缩comprise v.包括,构成,由……构成妥协的compote v.计算,估计,用计算机计算conceal vt.隐藏,隐蔽,隐瞒观念,概念concert n.音乐会conduct v.引导,管理,为人,传导configure vi.配置,设定confirmation n.证实,确认,批准confusion n.混乱,混淆connect v.连接connection n.连接,关系,接线connectivity n.连通性considerably adj.相当地construct vt.建造,构造,创立constantly adv.经常地,坚持不懈地consumer n.消费者contain vt.包含,容纳,容忍content n.内容contribute n.贡献control n.控件control menu 控制菜单conventional adj.常规的convert vt.转变coordinate n.同等者,同等物cord n.端口corporate adj.共同的,合作的correspond vi.符合,协调corresponding adj.相应的corruption n.腐败,贪污,堕落counter n.计算器,计数器CPU n.中央处理器crap n.废物,赌输的一注,废话crash v.崩溃critical adj.危急的,评论的,批评的cursor n.光标,游标,指针,指示器curve n.曲线,弯曲cylinder n.圆筒,圆柱体,汽缸,柱面Ddata structure数据结构database n.数据库,资料库debate v.争论,辩论debugger n.调试器,调试程序debugging n.调试decoder n.解码器dedicate vt.献(身),致力,题献dedicated adj.专用的define vt.定义,详细说明definition n.定义,解说,清晰度,精确度delegation n.代表团,授权,委托deletion n.删除,删除部分deliberately adv.故意地dependence n.依靠,依赖,信任,信赖deploy v.部署,展开,配置describe v.描述,记述desktop n.台式电脑,桌面detergent n.清洁剂detection n.察觉,发觉,探测,发现devise v.设计,策划,图谋,遗赠dial v.拨digital adj.数字的direct adj.直接的discrete adj.分离的,转折的,离散的discuss vt.讨论,论述discussion n.讨论,商议disk n.磁盘disparate adj.不同的,全异的display n.显示器v.显示disseminate v.散布distinctive adj.与众不同的,多样的distribute vt.分发,分配diverse adj.不同的,变化多样的dock v.对接document n.公文,文件,文挡,档案domain n.范围,领域DOS 磁盘操作系统download v.&n.下载drag v.拖动dramatic adj.戏剧的,剧烈的drive n.驱动器dual adj.双的,二重的,双重DVD-player n.DVD播放器dynamic adj.动态的Dynamic HTML Page Designer 动态HTML 网页设计程序Eeducational adj.教育的educe vt.得出,引出effectively adv.有效地,有利地efficient adj.效率高的electronic adj.电子的electronic commerce 电子商务Electronic Data Interchange(EDI) 电子数据交换Electronic Funds Transfer(EFT) 电子资金传送element n.要素,成分,元素elementary adj.基础的,基本的,初等的eliminate vt.排除,消除e-mail n.电子邮件emotion n.情感,感情emphasize v.强调emphatically adv.强调地,用力地employee n.职工,雇员,店员empty v.使……空enable vt.使能够encompass v.包围,环绕enhancement n.增进,增加enormous adj.巨大的enterprise n.企业,计划,事业,进去心entertainment n.娱乐entity n.实体,组合,组织,团体environment n.环境equipment n.装备,设备,器材error message 出错消息essence n.本质essential adj.本质的,实质的,基本的establish v.建立estimate v.估计,估价,评估evolve v.使……逐步形成,演化,进化evolving adj.进化的,展开的Excel 微软的表格处理软件exchange vt.交换,互换exchange ideas 交换意见executable adj.可实行的,可执行的expand v.扩展expense n.费用,开支expensive adj.昂贵的,价格高的explosive adj.爆炸性的,爆发性的extension n.延长,扩充,范围,扩展名external adj.外部的,客观的externally adv.外表上,外形上extremely adv.极端地,非常地Ffacilitate vt.使容易,使便利,促进facility n.设备,装置,工具facsimile n.传真familial adj.熟悉的,常见的favorite adj.喜爱的,喜欢的feature n.特征financial adj.财政的,金融的Flash v.闪现flexibility n.弹性,适应性,机动性flexible adj.灵活的floppy n.软驱adj.懒散的,松软的flow v.流动footprint n.足迹,脚印for instance 例如foundation n.基础,根本,建立,创立frame n.框架framework n.框架,构架,结构FrontPage 微软的制作网页工具function n.作用,功能functionality n.功能型future n.未来,将来Ggeneral adj.通用的,通常的n一般信息. generally adv.一般,通常generate vt.产生generation n.代gizmos n.小发明granular adj.粒状的group n.小组guess v.猜,猜出GUI n.[计]图形用户界面guide n.向导Hhand-help PC n.手提电脑hard disk 硬盘hardware n.硬件have a strong impact on 对……有巨大影响hesitation n.犹豫hierarchical adj.分等级的higher-quality adj.高质量的high-level language 高级语言highlighted adj.突出的high-powered adj.强有力的high-temperature adj.高温的horizontal adj.水平的host n.主机human-readable adj.易于阅读的hyperlink n.超连接hypermedia n.超媒体hypertext n.超文本II/Odevices 输入/输出设备icon n.图标idiom n.习语,方言ignore vt.不理睬,忽视imagination n.想象,想象力impact n.影响,作用improve v.改善,改进in contrast 与……对比inappropriate adj.不合适的inception n.起初inconvenient adj.不方便的,不恰当的increase n.增加,增大,增长incredible adj.难以置信的indicate v.表明individual n.个人,个体inexpensive adj.便宜的,不贵重的infect vt.传染,感染influence n.影响,感化information n.信息,消息inheritance n.遗传,遗产initial adj.最初的,词首的,初始的inkjet printer 喷墨打印机innovative adj.创新的,革新的input device 输入设备insertion n.插入install vt.安装,安置installation n.安装instruction n.说明,指令instruction set 指令系统(也作instruction system)instrument n.工具,手段,器械,器具integrate vt.结合,整合integrated adj.综合的,完整的integrated ciruit 集成电路intelligent adj.聪明的,智能的intend vt.想要,打算intensity n.亮度interactive adj.交互式的interchange vt. 交换interconnect vt. 使相互连接interconnection n. 互相联络intermediary adj. 中间的,调解的internal adj.内部的Internet n.因特网Internet Information Server(IIS)因特网信息服务器internetworking n.网络interpret v.解释,注释interpretation n.解释,阐明,口译interpreter n.解释程序,解释器,口译员interrupt v.中断intertwine v.使纠缠,使缠绕interanet 内联网introduction n.介绍invade vt.侵略,侵袭,拥挤inventive adj.善于创造的,发明的inventory n.存货,财产清册,总量invoke v.启动,调用involve vt.包括item n.项目Kkeyboard n.键盘keyword n.关键字knowledge n.知识Llanguage n.语言,语言文学,术语lapotop n.膝上型电脑large-scale 大规模的laser printer 激光打印机launch vt.使下水,发射,开办,发动,发起license n.许可,执照limitation n.局限,限制linker n.连接程序location n.地址logic adj.逻辑的logical adj.合乎逻辑的,合理的low-temperature adj.低温的luminance n.亮度Mmachine instruction 机器指令magnetic adj.磁性的magnetically adv.有磁力的,有魅力的main memory 内存mainframe n.大型机mainstream n.主流maintain v.维持maintenance n.维持,维修,坚持major adj.主要的,多的,主修的manageable adj.易处理的,便于管理的manipulate vt.操作,使用,巧妙地处理manual n.手册manually adv.用手manufacture n.制造manufacturer n.制造业者,厂商maximize/restore button 最大化/还原按钮medium n.媒体,方法,媒介Megahertz n.兆赫兹memory unit 存储单元menu bar 菜单栏mesh n.网孔,网状method n.方法microcomputer n.微型计算机microphone n.扩音器,麦克风Microsoft Transaction Server 微软事务处理服务器minimum adj.最小的,最低的mobile adj.可移动的modem n.调制解调器motherboard n.主板mouse n.鼠标MPEG addr.运动图象专家组multimedia n.多媒体multiple adj.多样的,多重的multitasking n.多任务处理muli-user adj.多用户的mutate v.变异mysterious adj.神秘的Nnative adj.本国的,本地的,与生俱来的navigation n.导航,航海,航空,领航negative n.否定,负数,底片newsletter n.时事通讯NIC abbr.网络接口卡notaion n.记法,注释,符号notebook computer 笔记本电脑note n.备注,注释notice n.注意numeric adj.数字的Oobvious adj.明显的occupy v.占用occurrence n.发生,出现,事件offer vt.提供on the lookout for 寻找,提防online n.在线operand n.操作数operate v.操作,使用operation n.操作opportunity n.机会,时机optional adj.可选择的,随意的organization n.组织original adj.原来的originator n.始发者,创造者,始发站OS (Operating System)操作系统outlet n.插座Outlook 收发邮件的软件output v.输出Ppackage n.包裹,包paperless business 无纸贸易parallel adj.平行的partner n.搭档,伙伴passive adj.被动的passive resistance 消极抵抗PCI abbr.周边元件扩展接口per prep.每,每一perform vt.履行,执行,表演peripheral adj.外围的,外围设备permission n.许可,允许permit n.通行证,许可证,执照perspective n.远景,前途PhotoDraw 图象处理软件phrase n.短语,习语picture tube 显象管pixel n.像素plug vt.堵,塞,插上pointer n.指针,指示符,指针光标polish n.光泽,优雅,精良,磨光polymorphic adj.多形的,多态的,多形态popularity n.普及,流行,声望potential adj.潜在的power supply 电源powerful adj.强大的PowerPoint 制作幻灯片和简报的软件precise adj.精确的,清晰的,严格的presentation n.表示,图象,外观,演示文稿,简报presently adj.目前,不久previous adj.以前的,早先的primitive adj.原始的,简单的,质朴的principle n.法则,原则,原理printer n.打印机priority n.优先级,优先private adj.私人的,秘密的,私有的profess n.过程,方法,作用,步骤processor n.处理器productivity n.生产力professional adj.专业的,职业的n.专家program n.程序programmable adj.可编程的programming n.编程,程序设计prompt v.&n.提示,付款期限proofread vt.校正,校对property n.财产protocol n.协议protocol suite 协议组provide v.供应,供给public key cryptography 公共密钥加密pulse n.脉冲punctuation n.标点,标点符号purchase vt.买,购买purpose n.目的,意图,用途Qqualification n.资格,条件,限制,限定queue n.队列Rrandom adj.随机的随意,任意random-access memort(RAM) 随机存储器ratio between function and price 性价比read-only memor(ROM) 只读存储器receie vt.接受recipient n.接受者recognition n.赞誉,承认,赏识,识别,重视,公认recognize v.识别,认出recommend vt.推荐rectangular adj.矩形的,成直角的reduction n.减少,下降reference n.参考refresh v.刷新regardless of adj.不管,不顾relate vt.有关联,有关系relatively adj.相对地remind vt.发布,发行remote adj.可依赖的remove vt.提醒,使想起remote adj.遥远的,偏僻的,细微的remove vt.移动represent v.代表,表明reproduce v.繁殖,复制,再生,使…..重现resident adj.居住的,长住的resolution n.清晰,分辨率resource n.资源responsible adj.有责任的,可靠的,负责的restart v.重新开始,重新启动restricted adj.受限制的,有限的resume n.履历,个人简历retrieval n.取回,修复,检索,查找retrieve v.重新回到reveal vt.展现,显示,揭示,暴露revenue n.收入,税收reverse adj.相反的revert v.恢复revolutionize v.革新riddle n.谜语robust adj.强壮的,坚定的,结实的routine n.例行公事,常规,程序runtime adj.运行时的Ssafety n.安全性scalable adj.可改变大小的,可升级的schedule n.时间表,进度表scroll v.滚动SCSI 小型计算机系统接口search n.搜寻,查究secondaries n.辅助设备section n.部分,片段,部件,地域secure v.保护,安全的,可靠的security n.安全self-replicating adj.自我复制的sequence n.顺序serious adj.严肃的setup v.&n.安装shadow n.阴影,影子,影象share vt.分享,均分,共有,分配silicon chip 硅片similar adj.类似的simplify vt.单一化,简单化simulate vt.模拟,模仿,假装,冒充simultaneously adv.同时地situation n.情况,场合SLI (Suppress Length Indicator) 控制长度指示器solt n.缝,狭槽,位置smooth adj.平滑的,正常的smoothly adv.平稳地software n.软件sophisticated adj.精制的,老练的soundboard n.声卡special functional 特殊功能的specialized adj.专门的specific adj.明确的,特殊的specification n.具体指明,规格spill vi.溢出,涌流squash v.粉碎,硬放,压坏stability n.稳定性stack n.堆栈standard adj.标准的status n.状态stereo adj.立体的stero device 音响stick v.放,置,粘住,刺,戳storage n.存储量,存储器,内存store v.存储stream n.串,流strength n.力量strive v.努力,斗争,竞争structure n.结构,构造,建筑物stuff n.原料,材料,素材,资料subnet n.子网subsume v.包容,包含subscriber n.用户端,订户,签署者suggest vt.建议,提出,暗示suite n.组supplementary adj.辅助的surfing n.网络冲浪symbol n.符号,记号,象征synonym n.同义词syntactic adj.句法的synthesis n.综合,合成system n.系统,规律,秩序,体制system unit 主机Ttailor vt.制定taskbar n.任务栏technique n.技术,技巧,方法telecommunication n.电信,无线电通讯terminal n.终端terminate v.停止,结束,终止therefore adv.因此,所以thus conj.因此timer electrical signal 定时电信号timer n.计时器tool bar 工具栏topic n.话题,主题topology n.拓扑,布局,拓扑学tour n.旅游,旅行track vt.追踪,通过traditional adj.传统的,惯例的transaction n.办理,处理,交易,事务transfer v.传输,转移,交换,转接translate v.翻译,转换,迁移,平移transformation n.变换,转换transistor n.晶体管transmission n.传输,传送,输送transmit vt.传输,传送,传达stay n.盘,碟trivial adj.琐细的,价值不高的Uundergo v.经历,经受universal adj.普遍的,全体的,世界的unpleasant adj.使人不愉快的,讨厌的unstable adj.不稳定的,不固定的,易变的upgrade vt.使升级,升级usage n.使用,用法utilize vt.利用Vvacuum tube 真空管value n.值,价值,评估,估价variation n.变更,变化,变异variety n.多样性,变化,品种,种类vast adj.巨大的,大量的version n.译文,译本,翻译vertical adj.垂直的via prep.经,通过,经由video card 显卡virtuall adv.事实上,实质上visual adj.视觉的访问者visual pollution 视觉污染volatile adj.易失的Wwealth n.财富,大量web browser 浏览器Windows 视窗操作系统wire n.电线,电报,电信workstation n.工作站wrap vt.包装,包,覆盖,隐藏Yyeah (yes) 是的。

学术英语课后答案 unit1

学术英语课后答案  unit1

学术英语理工教师手册Unit 1 Choosing a TopicI Teaching ObjectivesIn this unit , you will learn how to:1.choose a particular topic for your research2.formulate a research question3.write a working title for your research essay4.enhance your language skills related with reading and listening materials presented in this unit II. Teaching Procedures1.Deciding on a topicTask 1Answers may vary.Task 21 No, because they all seem like a subject rather than a topic, a subject which cannot be addressed even by a whole book, let alone by a1500-wordessay.2Each of them can be broken down into various and more specific aspects. For example, cancer can be classified into breast cancer, lung cancer, liver cancer and so on. Breast cancer can have such specific topics for research as causes for breast cancer, effects of breast cancer and prevention or diagnosis of breast cancer.3 Actually the topics of each field are endless. Take breast cancer for example, we can have the topics like:Why Women Suffer from Breast Cancer More Than Men?A New Way to Find Breast TumorsSome Risks of Getting Breast Cancer in Daily LifeBreast Cancer and Its Direct Biological ImpactBreast Cancer—the Symptoms & DiagnosisBreastfeeding and Breast CancerTask 31 Text 1 illustrates how hackers or unauthorized users use one way or another to get inside a computer, while Text2 describes the various electronic threats a computer may face.2 Both focus on the vulnerability of a computer.3 Text 1 analyzes the ways of computer hackers, while Text 2 describes security problems of a computer.4 Text 1: The way hackers “get inside” a computerText 2: Electronic threats a computer facesYes, I think they are interesting, important, manageable and adequate.Task 41Lecture1:Ten Commandments of Computer EthicsLecture 2:How to Deal with Computer HackersLecture 3:How I Begin to Develop Computer Applications2Answersmay vary.Task 5Answers may vary.2 Formulating a research questionTask 1Text 3Research question 1: How many types of cloud services are there and what are they? Research question 2: What is green computing?Research question 3: What are advantages of the cloud computing?Text 4Research question 1: What is the Web 3.0?Research question 2: What are advantages and disadvantages of the cloud computing? Research question 3: What security benefits can the cloud computing provide?Task 22 Topic2: Threats of Artificial IntelligenceResearch questions:1) What are the threats of artificial intelligence?2) How can human beings control those threats?3) What are the difficulties to control those threats?3 Topic3: The Potentials of NanotechnologyResearch questions:1) What are its potentials in medicine?2) What are its potentials in space exploration?3) What are its potentials in communications?4 Topic4: Global Warming and Its EffectsResearch questions:1) How does it affect the pattern of climates?2) How does it affect economic activities?3) How does it affect human behavior?Task 3Answers may vary.3 Writing a working titleTask 1Answers may vary.Task 21 Lecture 4 is about the security problems of cloud computing, while Lecture 5 is about the definition and nature of cloud computing, hence it is more elementary than Lecture 4.2 The four all focus on cloud computing. Although Lecture 4 and Text 4 address the same topic, the former is less optimistic while the latter has more confidence in the security of cloud computing. Text3 illustrates the various advantages of cloud computing.3 Lecture 4: Cloud Computing SecurityLecture 5: What Is Cloud Computing?Task 3Answers may vary.4 Enhancing your academic languageReading: Text 11.Match the words with their definitions.1g 2a 3e 4b 5c 6d 7j 8f 9h 10i2. Complete the following expressions or sentences by using the target words listed below with the help of the Chinese in brackets. Change the form if necessary.1 symbolic 2distributed 3site 4complex 5identify6fairly 7straightforward 8capability 9target 10attempt11process 12parameter 13interpretation 14technical15range 16exploit 17networking 18involve19 instance 20specification 21accompany 22predictable 23profile3. Read the sentences in the box. Pay attention to the parts in bold.Now complete the paragraph by translating the Chinese in brackets. You may refer to the expressions and the sentence patterns listed above.ranging from(从……到)arise from some misunderstandings(来自于对……误解)leaves a lot of problems unsolved(留下很多问题没有得到解决)opens a path for(打开了通道)requires a different frame of mind(需要有新的思想)4.Translate the following sentences from Text 1 into Chinese.1) 有些人声称黑客是那些超越知识疆界而不造成危害的好人(或即使造成危害,但并非故意而为),而“骇客”才是真正的坏人。

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100001

基础复习阶段Comprehensive Exercises(综合练习)Unit OneA语言基础知识练习1)重点句型与结构操练:Translate the following sentences into Chinese, paying attention to the underlined parts.1.Vitamins are different in that their elements are arranged differently, and each vitamin performs one or more specific functions in the body.注意:1)for all that (=although),例如:They are good people, for all that their ways are not the same as ours.2)now that(=since),例如:Now that you have come, you may as well stay here for a couple of days.2.If you intend to have friends to dinner, you plan the menu, make a shopping list and decide which food to cook first, and such planning is an essential for any type of to be served.3.Vincent Van Gogh killed himself when he was only 37, but he left behind him more than 2000 paintings and drawings, which established his reputation in a way he would never have considered possible had he been alive.4.The suspended trade talk between the two superpowers is reported in the local newspapers to have been resumed in Washington two days ago.5.Good news sometimes was released prematurely, with the British recapture of the port announced half a day before the defenders actually surrendered.注意:“with+名词+分词”构成独立主格,例如:With the guide leading the way ,the tourists started off into the dark night.6.On account of the uncertainty of the market at your end, we have suffered some loss by the business with you in the past few years.7.All matter as it is normally encountered either consists of elements or combinations of elements called compounds.8.Odd though it sounds, cosmic inflation is a scientifically plausible consequence of some respected ideas in elementary-particle physics, and many astrophysicists have been convinced for the better part of a decade that it is true.9.In natural science, more than in any other human institution, it is necessary to search out the past in order to understand the present.注意:1)nothing more than 只不过是:The individual TV viewer invariably senses that he or she is nothing more than an anonymous, statistically insignificant part of a huge and diverse audience.2)nothing but 仅仅只不过:The method of scientific investigation is nothingbut the expression of the necessary mode of working of the human mind.3)anything but 完全不The solution is anything but satisfactory.10.Very few will doubt that it is science that has at once quickened the demand for general education in modern times and made the education itself effective.2)重点词汇与成语操练:Choose the best one to complete the following sentences. 11.It’s usually the case that people seldom behave in a way when in a furious state.A. optionalB. rationalC. sophisticatedD. credible12.How large a proportion of the sales of stores in or near resort areas can be to tourist spending?A. attributedB. contributed C subjected D. submitted13.All experts agree that the most important consideration with diet drugs is carefully the risks against the benefits.A. weighingB. valuingC. evaluationD. distinguishing14.At first the designers differed in their opinions, but on second thoughts all of them agreed to the plans to the new specifications.A. confirmB. confrontC. confineD. conform15.I a letter to an Internet service that distributes journalists’ questions to more than 750 institutions.A. assignedB. detachedC. attachedD. dispatched16.A patient who is dying of incurable cancer of the throat is in terrible pain, which can no longer be satisfactorily .A. diminishedB. relaxedC. alleviatedD. abolished 17.Statistics show that many women have their lives to teaching careers, yet relatively few have become principals or headmasters.A. obligedB. committedC. engagedD. resolved18.The U.S. senator alleged in his speech that a nuclear war the human race would be ruined completely.A. in the event ofB. with reference toC. in relation toD. in the case of19.We are confronted with a host of difficulties, so we should have some other plans to back on if this one fails.A. fall back onB. lean back againstC. look back overD. go back on 20.Complaining is usually most effective when it is done politely but firmly, and especially when the consumer can demonstrate what is wrong with the item .A. at largeB. in questionC. by natureD. form scratchB.英语知识运用:Use of English (Cloze Tests )IComparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened 21 . As was discussed before, it was not 22 the 19th century that the newspaper became the dominant pre-electronic 23 , following in the wake of the pamphlet and the book and in the 24 of the periodical. It was during the same time that the communications revolution 25 up, beginning with transport, the railway, and leading 26 through the telegraph, the telephone, radio, and motion pictures 27 the 20th–century world of the motor car and the airplane. Not everyone sees that process in 28 . It is important to do so.It is generally recognized, 29 , that the introduction of the computer in the early 20th century, 30 by the invention of the integrated circuit during the 1960s, radically changed the process, 31 its impact on the media was not immediately 32 . As time went by, computers became smaller and more powerful, and they became “personal” too, as well as 33 , with display becoming sharper and storage 34 increasing. They were thought of, like people, 35 generations, with the distance between generations much 36 .It was within the computer age that the term " information society " began to be widely used to describe the 37 within which we now live. The communications revolution has 38 both work and lei-sure and how we think and feel both about place and time, but there have been 39 views about its economic, political, social and cultural implications. "Benefits" have been weighed 40 "harmful" outcomes. And generalizations have proved difficult. (278 words)21. a. between b. before c. since d. later22. a. after b. by c. during d. until23. a. means b. method c. medium d. measure24. a. process b. company c. light d. form25. a. gathered b. speeded c. worked d. picked26. a. on b. out c. over d. off27. a. of b. for c. beyond d. into28. a. concept b. dimension c. effect d. perspective29. a. indeed b. hence c. however d. therefore30. a. brought b. followed c. stimulated d. characterized31. a. unless b. since c. lest d. although32. a. apparent b. desirable c. negative d. plausible33. a. institutional b. universal c. fundamental d. instrumental34. a. ability b. capability c. capacity d. faculty35. a. by means of b. in terms of c. with regard to d. in line with36. a. deeper b. fewer c. nearer d. smaller37. a. context b. range c. scope d. territory38. a. regarded b. impressed c. influenced d. effected39. a. competitive b. controversial c. distracting d. irrational40. a. above b. upon c. against d. with2America is changing its eating habits,---41---medical evidence mounts that we are ---42--- we eat, consuming a healthier diet has become almost a national ---43--- in the United Stated. The food –for –fitness phenomenon began in the 1970s ---44--- a U.S. Senate Committee ---45---the conclusion that six out of ten leading causes of death -- such as heart disease and cancer might be linked to diet. The government issued dietary guidelines ---46---Americans to eat a ---47--- of food, maintain proper weight, and limit intake of fat, salt and sugar.For most Americans, ---48--- to eat is a matter of personal choice, ---49--- than one of supply. An excellent nationwide food distribution system ensures that fresh produce is readily ---50---in all parts of the country, ---51---of the season. Taking ---52--- of this abundance, many people are giving up traditional meal-and-potatoes fare(饮食) in ---53--- of lighter meals of salads, fruits and vegetables.One of the most significant ---54--- in the American way of eating is the healthful change in restaurant food. One of very two meals in the United States is eaten ---55--- the home. Restaurants are making special efforts to provide low-fat, low-salt, and low-calorie items. (216 words)41. a. If b. As c. Though d. For42. a. that b. what c. where d. when43. a. passion b. emotion c. consideration d. concept44. a. that b. while c. then d. when45. a. took b. reached c. made d. obtained46. a. suggesting b. demanding c. advising d. proposing47. a. number b. variety c. sum d. series48. a. how b. when c. where d. what49. a. more b. other c. rather d. better50. a. desirable b. available c. acceptable d. preferable51. a. in spite b. instead c. in the case d. regardless52. a. profit b. benefit c. advantage d. use53. a. favor b. search c. place d. opposition54. a. tasks b. trends c. alternatives d. ambitions55. a. in b. outside c. at d. insideC.Reading Comprehension:Text 1Air travel is such an everyday experience these days that we are not surprised when we read about a politician having talked with the Japanese Prime Minister one day, having to attend a conference in Australia the following morning and having to be off at midday to sign a trade agreement in Bangkok. But frequent long distance flying can be so tiring that the traveler begins to feel his brain is in one country, his digestion in another and his powers of concentration nowhere --- in short, he hardly knows where he is .The fatigue we normally experience after a long journey is accentuated when we fly from east to west or vice versa because we cross time zones. Air travel is so quick nowadays that we can leave London after breakfast and be in New York in eight hours. Yet what really disturbs us is that when we arrive it is only lunch time, but we have already had lunch on the plane and are expecting dinner.Doctors say that since air travelers are in no condition to work after crossing a number of time zones, they should go straight to bed on arrival. Airline pilots, in fact, whose experience is so obviously relevant that it ought to serve as a guide, often live by their own watches, ignoring local time, and have breakfast at midnight if necessary. They have far less reason to worry about their health than executives because they are used to flying and are physically fit.Businessmen who go on long-distance flights, however, are usually out for promotion and flattered to have been chosen because it adds to their status and prestige in the firm. They are lucky if the company is enlightened enough to insist on their taking the doctor’s advice and resting f or a day before working. Sometimes the managing director is such an energetic character that he expects everyone to be as he is. As he has never felt any ill effects after flying himself, the schedule he lays down is so exacting(=making great demands, severe, strict) that the employee is too exhausted to carry it out satisfactorily. He must either go straight to an important meeting as soon as his plane touches down or else return as soon as the meeting is over to report to his boss. Dynamic managers of this type often do not realize how disastrous this policy may be for the man’s health and the company’s reputation. (411 words)56. According to the second paragraph, which of the following statements is true?a. We experience fatigue on flights only when we cross time zones.b. We experience fatigue on a long flight when we fly to wards the west.c. Crossing time zones increases the fatigue we experience on a long flight.d. Air travel is so quick nowadays that we experience fatigue on a flight.57. According to the passage, after long-distance flights, pilots .a. always go straight to bedb. find it wisest to take no notice of local timec. have breakfastd. worry about their health58. It can be learned from the passage that if a managing director is energetic hefrequently .a. expects too much of his employeesb. makes his employees attendclasses to keep fitc. refuses to allow his employees to lie downd. has an important meetingwith his employees on a light59. In the last paragraph, it is implied but not directly said that the employees who go on long-distance flights .a. are obviously unkindly treatedb. are not given time to make friends onmeetings abroadc. may make serious mistakes because of tirednessd. may send in theirresignations60. The title which best expresses the main idea of the passage would be .a. Importance of Air Travel in Modern Societyb. Crossing Time Zones-MainReason for the Fatiguec. Businessmen’s View on Long-distance Flightsd. Air Travel and Its Effecton a Person’s HealthText 2Opinion polls are now beginning to show reluctant consensus that, whoever is to blame and whatever happens from now on, high unemployment is probably here to stay. This means we shall have to find ways of sharing the available employment more widely.But we need to go further. We must ask some fundamental questions about the future of work. Should we continue to treat employment as the norm? Should we not rather encourage many other ways for self-respecting people to work? Should we not create conditions in which many of us can work for ourselves rather than for an employer? Should we not aim to revive the household and the neighborhood, as well as the factory and the office, as centers of production and work?The industrial age has been the only period of human history in which most people’s work has taken the form of jobs. The industrial age may now be coming to an end, and some of the changes in work patterns which it brought may have to be reserved. This seems a discouraging thought. But, in fact, it could offer the prospect of a better future for work. Universal employment, as its history shows, has not meant economic freedom.Employment became widespread when the enclosures of the 17th and 18th centuries made many people dependent on paid work by depriving them of the use of the land, and thus of the means to provide a living for themselves. Then the factory system destroyed the cottage industries and removed work from people’s homes. Later, as transport improved, first by rail and then by road, people commuted longer distances to their places of employment until, eventually, many people’s work lost all connection with their home lives and the places in which they lives.Meanwhile, employment put women at a disadvantage. In pre-industrial times, men and women had shared the productive work of the household and village community. Now it became customary for the husband to go out to paid employment, leaving the unpaid work of the home and family to his wife. Tax and benefit regulations still assume this norm today, and restrict more flexible sharing of work roles between the sexes.It was not only women whose work status suffered. As employment became the dominant form of work, young people and old people were excluded--- a problem now, as more teenagers become frustrated at school and more retired people want to live active lives.All this may have to change. The time has certainly come to switch some efforts and resources away from the utopian goal of creating jobs for all, to the urgent practical task of helping many people to manage without full-time jobs. (449 words)61. Research carried out in recent opinion polls shows thata. available employment should be restricted to a small percentage of thepopulationb. new jobs must be created in order to rectify high unemployment figuresc. available employment must be more widely distributed among the unemployedd. the present high unemployment figures are a fact of life62.The article suggests that we should now re-examine our thinking about the futureof work anda. be prepared to admit that being employed is not the only king of workb. create more factories in order to increase our productivityc. set up smaller private enterprises so that we in turn can employ othersd. be prepared to fill in time at home by taking up hobbies and leisure activities63.The arrival of the industrial age in our historical evolution meant that .a. universal employment virtually guaranteed prosperityb. economic freedom came within everyone’s graspc. patterns of work were fundamentally changedd. people’s attitudes to work had to be reversed64. The enclosures of the 17th and 18th centuries meant that .a. people were no longer legally entitled to own landb. many people were forced to look elsewhere for means of supporting themselvesc. people were not adequately compensate for the loss of their landd. people were badly paid for the work they managed to find65. The article concludes that .a. the creation of jobs for all is out of the questionb. our efforts and resources in terms of tackling unemployment are insufficientc. people should start to support themselves by learning a practical skilld. we should help those whose jobs are only part-time.Text 3Recently a mathematics paper taken by all 15-year-olds in Osaka Province, Japan, in 1984, was set to British 15-year-olds at grammar school, reckoned to be among the brightest 10 per cent. Yet only 5 out of 60 beat the average Japanese mark. There is no doubt at all that if we set the Osaka test to all British 15-year-olds, they would score much lower than their Japanese counterparts. But this does not prove that the Japanese are cleverer or better taught. It does suggest some fundamental differences in our respective views on the nature of the human mind and the process of education itself.The one really striking feature of the test is that the Japanese set it to all 15-yaer-olds. You only set all pupils the same test if you believe they can all do it or, in other words, that all pupils are capable of the same level of achievement. This may or may not be true, but the simple fact is that it is not a view widely held in Britain. Here, the view is that different people have different potential levels of achievement. That is why most of our math teaching above the first year of secondary school is done in sets or bands and why we teach different sorts of mathematics to pupils of differing abilities . And there would be loud protests from parents were schools to suggest a move to mixed-ability math teaching right up to the fifth year.Yet this is exactly how the Japanese organize their classes for math. They believe that under-achievement is the result not of inability but of laziness or inattention on the part of the pupil, or poor teaching. So in Japan they have a single syllabus, taught to all pupils in unsettled classes, with a single exam. Which system is better? Before you answer that question, you must first make decisions about your view of human intellectual capacity and about the aims of education. The test does not even prove that Japanese pupils are better mathematicians. It is difficult to judge from one example but, with its evident bias towards traditional geometry, it seems that many areas of the British curriculum are excluded. Graphs, statistics, trigonometry and social arithmetic are among the missing topics. The Japanese questions are also curiously impractical. (384 words)66. In the opinion of the writer, the lower marks in mathematics obtained by Britishpupils indicate that .a. Japanese pupils receive better tuitionb. they are not so clever as their Japanese counterpartsc. the views on key issues of the two nations differ basicallyd. the process of education itself is at fault67. Setting the same test to all members of a particular age group impliesthat .a. they have different levels of achievementb. the teaching has been of a very high standardc. they can without exception tackle it successfullyd. the curriculum followed is standardized68. In Britain setting and banding are used in math teaching because .a. it is believed that there is a wide range of ability among pupilsb. parents would protest against mixed-ability teachingc. different groups of students prefer different sorts of mathd. pupils are all capable of the same level of achievement69. The Japanese believe that under-achievement in math is due to .a. the shortcomings of teachers and pupilsb. the way classes are organizedc. the inherent lack of ability in some pupilsd. the pressure of examinations70. According to the passage, the Japanese test .a. gives poor coverage of some areasb. excludes many of the topics which the British studyc. pays little attention to traditional geometryd. includes some impractical questions about social arithmetic, graphs, statistics, etc.E Writing(提纲式应用文)Directions:Water pollution is a serious problem threatening the survival of human beings, plants and animals. It is urgent that some strong measures be adopted to deal with the problem.There has been a discussion recently on the issue in a newspaper. Write a letter to the newspaper based on the following outline:1. Present situation2. Suggested measures to be taken3. Future prospectWrite an essay of about 200 words within 40 minutes on the ANSWER SHEET.尊敬的先生/女士:我给您写信是想陈述我对水的污染问题的看法.普遍认为,水的污染是当今严重的公害.世界各国的河流正在受到垃圾及有害化学物质的污染.船舶加剧了污染,因为它们依靠河流排放废物.油和其它化学物质会杀死鱼类并使水不能饮用.总之,污染了的水对人人都是个大问题.正如你所知道的,人们靠水生活.他们应该参与找到解决污染问题的方法.我认为,需要尽快采取某些应对措施.首先,各国政府理应制订处理污染问题的规章制度.此外,在全面处理和净化废液以前,必须禁止城乡工厂把废液排入河流.我觉得,如果这些工厂违反有关的法规或法律,则应加重罚款.当然还会有一些其它的治理方法值得采取.至于未来的前景,我相信,在这一方面会取得良好的成果.过去一度被工业废料污染的河流将会得到清理,几年以前鱼类不能长年的河流又会重见鱼群.总之,似乎很明显,只要人人各尽其责并努力去寻找控制污染的方法,明天将会变得更美好、更光明。

Theoretical Computer Science Higman’s Embedding Theorem. An Elementary Proof

Theoretical Computer Science Higman’s Embedding Theorem. An Elementary Proof

CDMTCSResearchReportSeriesHigman’s EmbeddingTheorem.An Elementary ProofLuminit¸a DediuUniversity“Dun˘a rea de Jos”,RomaniaCDMTCS-010December1995Centre for Discrete Mathematics andTheoretical Computer ScienceHigman’s Embedding Theorem.An Elementary Proof∗Luminit¸a Dediu†AbstractIn1961G.Higman proved a remarkable theorem establishing a deep connection between the logical notion of recursiveness and questions aboutfinitely presented groups.The basic aim of the present paper is to provide the reader with a rigorous and detailed proof of Higman’s Theorem.All the necessary preliminary material,including elements of group theoryand recursive functions theory,is systematically presented and with complete proofs.The aquaintedreader may skip thefirst sections and proceed immediately to the last.1SubgroupsWe assume familiarity with the concept of subgroup.We shall use the standard notation,i.e.H≤G means that H is a subgroup of G.Fact1.1.If H is a subgroup of a group G and K is a subset of H,then K is a subgroup of H iffK is a subgroup of G.Fact1.2.For any family{H i}i∈I of subgroups of a group G the intersectioni∈I H i is also a subgroupof G.Proof.First,we havei∈I H i=∅.Indeed,if H i≤G,for all i∈I,then1∈H i,i∈I,so1∈i∈IH i.Letx,y∈i∈I H i.Then x,y∈H i for all i∈I.As H i≤G,for all i∈I,xy−1∈H i,hence xy−1∈i∈IH i.PFact1.3.Let f:G−→G be a group morphism,H⊆G and K⊆G .a)If H is a subgroup of G,then f(H)is a subgroup of G .b)If K is a subgroup of G ,then f−1(K)is a subgroup of G.∗Paper written to be admitted for PhD studies at Bucharest University under the guidance of Professor Cristian Calude.†Department of Mathematics,University“Dun˘a rea de Jos”of Galatzi,RomaniaProof.Since H≤G we have1G∈H and f(1G)=1G ∈f(H)(f is a morphism).Hence f(H)=∅. Let x,y∈f(H).There exist two elements h1,h2∈H such that x=f(h1),y=f(h2).Then we can write(using the properties of f):xy−1=f(h1)[f(h2)]−1;since H≤G it follows that h1h−12∈H,so xy−1=f(h1h−12)∈f(H).The proof of the second statement is similar:if K≤G ,then1G∈K,so1G=f−1(1G )∈f−1(K) and f−1(K)=∅.Accordingly,if x,y∈f−1(K),then for some k1,k2∈K we have x=f−1(k1),y= f−1(k2)and xy−1=f−1(k1)[f−1(k2)]−1=f−1(k1k−12)∈f−1(K)(K≤G and k1k−12∈K).PFrom Fact1.3the preimage under the morphism f of the trivial subgroup{1G }of G is a subgroup of G.This is a special subgroup and it is called the kernel of the morphism f.We denote it by Kerf:Kerf={x∈G:f(x)=1G }.In the same way,the image by f of the group G,denoted by Imf or f(G),is a subgroup of G .2Generated Subgroups.GeneratorsLet E be a subset of a group G.Definition2.1The subgroup generated by the subset E(in G)is the intersection of all the subgroups of G containing E.Such subgroups do exist:for instance,the trivial subgroup G.Proposition2.2The subgroup G generated by a subset E consists of allfinite products of elements of E and inverses of these elements.Proof.Following the definition we have:H.G =H≤GH⊇ELet G be the set of allfinite products of elements of E and their inverses.We shall prove that G =G .By definition it follows that E⊆G .On the other hand,from Fact1.2,G is a subgroup of G and it is immediate now that G ⊆G .Conversely,it is sufficient to show that G ≤G and G ⊇E.First,note that G contains the“simple products”,i.e.all products formed by a single element x of E or x−1,so E⊆G .Let a=x1x2...x m and b=y1y2...y n be two elements of G ,where x i,y j∈E,1≤i≤m,1≤j≤n.Therefore we have:ab−1=(x1...x m)(y1...y n)−1=x1...x m y−1n...y−11,and this is afinite product of elements of E and inverses of elements of E,hence ab−1∈G .PFrom2.2it follows that if H1,H2are subgroups of a group G,then the subgroup generated by H1,H2 is formed by allfinite products of elements in H1,H2and their inverses.We shall denote this subgroup by H1,H2 or Gp{H1,H2}.As a particular case,if G is a commutative group,then the subgroup H1,H2 consists of all elements of the form h1h2with h1∈H1,h2∈H2.This subgroup is denoted by H1H2and we call it the product of subgroups H1,H2.Definition2.3A group G is said to befinitely generated if there exists afinite set E of elements of G that generates it.If E generates G we say that E is a set of generators for G.Example1.The aditive group of integers(Z Z,+)can be generated by the element1or by its oposite -1,since every integer n=0can be written as a sum of n terms equal to1if n>0or as a sum of−n terms equal to-1if n<0.Groups that can be generated by a single element are called cyclical groups.3Equivalence Relations.Quotient SetLet A be a set.Definition3.1A binary relation,usually denoted by“∼”,is said to be an equivalence relation on A provided the following three conditions hold:i)a∼a(reflexivity),ii)a∼b=⇒b∼a(symmetry),iii)a∼b,b∼c=⇒a∼c(transitivity).Examples2.1.Let n be a positive integer and define on Z Z the following binary relation denoted by“≡mod n”:for every a,b∈Z Za≡b mod n⇐⇒n/(a−b).2.The divisibility relation on I N is not an equivalence relation since it is not symmetric.If“∼”is an equivalence relation on A,then for each a∈A we define the set:ˆa={b∈A:b∼a}called the equivalence class of the elementˆa.Theorem3.2The equivalence classes determined by“∼”on A have the following properties:1)a∈ˆa,for all a∈A(henceˆa=∅),2)ˆa=ˆb⇐⇒a∼b,3)for all a,b∈A:ˆa=ˆb orˆa ˆb=∅,4)A=a∈Aˆa.Proof.1).Since a∼a it follows that a∈ˆa and soˆa=∅.2).From1)we have a∈ˆa.Ifˆa=ˆb,then a∈ˆb i.e.a∼b.Assume now that a∼b.Let x∈ˆa,then x∼a and,by transitivity,x∼b,i.e.x∈ˆb.This way we haveˆa⊆ˆb.Changing roles between a and b weobtainˆb⊆ˆa.Henceˆa=ˆb.3).Let a,b∈A such thatˆa ˆb=∅.Then there exists x∈ˆaˆb,i.e.x∼a and x∼ingtransitivity we have a∼b and from2)it followsˆa=ˆb.4).For every set A we can write A=a∈A a.From1)a∈ˆa,then A=a∈Aˆa.POne can note that using3)we can write A as a union of sets pairwise disjoint.In this case,we say that the equivalence classes of A realise a partition of A.The set of equivalence classes determined by the relation“∼”on A is denoted by A/∼and is said to be the quotient set of A relative to“∼”.The map p:A−→A/∼which carries every element a of A into his equivalence classˆa is a surjection that we call the canonical surjection.Definition3.3Let H be a subgroup of a group G.We define on G the relation“≡l mod H”given by:x≡l y mod H⇐⇒x−1y∈H for all x,y∈G,and we call it the left congruence modulo H.We shall prove that the above relation is an equivalence on G.For all x,y,z∈G we have(using the properties of a subgroup):i)x−1x=1∈H=⇒x≡l x mod H.ii)By definitionx≡l y mod H⇐⇒x−1y∈Hso,(x−1y)−1∈H⇐⇒y−1x∈H⇐⇒y≡l x mod H.iii)By definitionx≡l y mod H,y≡l z mod H⇐⇒x−1y∈H,y−1z∈Hso,(x−1y)(yz−1)∈H⇐⇒x−1z∈H⇐⇒x≡l z mod H.P Thus we can construct the quotient set G/≡l mod H,which is usually denoted by(G/H)l;its elements are called left equivalence classes modulo H.Following the definition,the class of an element x∈G is the set defined by{y∈G:x−1y∈H}={y∈H:y∈xH}=xH.If X∈(G/H)l,i.e.X is an equivalence class,an element x∈X is called a representative of X. Obviously,x∈G is a representative of X iffX=xH.Note that if x,y∈G and xH=yH,then x≡l y mod H and x−1y∈H.Similarly we can define the right congruence modulo H byx≡r y mod H⇐⇒xy−1∈H.The right equivalence class modulo H of an element x∈G is Hx and the quotient set G/≡r mod H is denoted by(G/H)r.Proposition3.4The quotient sets(G/H)l and(G/H)r have the same cardinal.Proof.Let X∈(G/H)l,X=xH with x∈G.Then we have:X−1=(xH)−1=H−1x−1=Hx−1∈(G/H)r.(We have used the relation H−1=H.Indeed,if x∈H we can put x=(x−1)−1and since x−1∈H(H is a subgroup),then x=(x−1)−1∈H−1.If x−1∈H−1,then x∈H,so x−1∈H.Hence H−1=H.) In the same manner as above we can prove that for every Y∈(G/H)r one has Y∈(G/H)l.In fact we can define the mapsΦ:(G/H)l−→(G/H)r carrying X onto X−1andΨ:(G/H)r−→(G/H)l carrying Y onto Y−1.These maps are inverse one to the other:Φ(Ψ(Y))=Φ(Y−1)=(Y−1)−1=Y,Ψ(Φ(X))=Ψ(X−1)=(X−1)−1=X,so that they establish a bijection between(G/H)l and(G/H)r.PExample 3.Consider S 3the group of all permutations of a 3element set andH = 123123 , 123213a subgroup of S 3.We shall construct the left and right equivalence classes modulo H.For all σ,τ∈S 3we have:σ≡l τmod H ⇐⇒σ−1τ∈H .On the other hand one can note that σ∈H iffσ(3)=3,hence σ−1τ∈H ⇐⇒(σ−1τ)(3)=3⇐⇒τ(3)=σ(3).In this way we get the following relation:σ≡l τmod H ⇐⇒σ(3)=τ(3).The left equivalence classes modulo H are:C l 1=H,C l 2= 123132 , 123312 ,C l 3= 123231 , 123321.Similarly,we deduce that σ≡r τmod H ⇐⇒σ−1(3)=τ−1(3).Since for every transposition τ=(i,j )∈S 3we have τ−1=τ,the inverses of the elements of S 3are:e −1=e,(1,2)−1=(1,3), 123312 −1= 123231,and we obtain the following right classes modulo H :C r 1= 123312 ,(1,3) ,C r 2= 123231 ,(2,3) ,C r 3= 123123,(1,2) .We can see now that the quotient sets (S 3/H )l and (S 3/H )r are not equal.4Normal Subgroups.Quotient GroupsProposition 4.1Let H be a subgroup of a group G .The following statements are equivalent:a)xHx −1⊆H ,for all x ∈G ,b)xHx −1=H ,for all x ∈G ,c)xH =Hx ,for all x ∈G ,d)(G/H )l =(G/H )r .Proof.•a)=⇒b):For all x ∈G we have xHx −1⊆H ;but x −1∈G and thus x −1Hx ⊆H .Putting H =x (x −1Hx )x −1we obtain H ⊆xHx −1(from the last inclusion),hence H =xHx −1.•b)=⇒a)is immediate.•b)=⇒c):xHx −1=H and by multiplication to right by x we obtain xH =Hx .•c)=⇒b):xH =Hx =⇒xHx −1=(Hx )x −1=H .•c)=⇒d):For all x ∈G we denote by ˆx l (and respectively ˆxr )the left (right)equivalence class modulo H.We saw that ˆx l =xH (ˆx r =Hx ).From c)we obtain ˆx l =ˆx r ,for all x ∈G ,hence (G/H )l =(G/H )r .•d)=⇒c):Let x∈G.Thenˆx l=xH∈(G/H)l=(G/H)r,so we canfind y∈G such thatˆx l=y r,i.e.xH=Hy.Putting x=x.1∈xH=Hy it follows that x∈Hy,i.e.x≡r y mod H.Hencex is a representative of Hy and so we can write Hx=Hy.Now we have Hx=Hy=xH,i.e.xH=Hx.P Definition4.2A subgroup H of a group G is said to be normal if it satisfyes one of the equivalent conditions in Proposition4.1.We write this by H¢G.Examples4.1.G and e are(trivial)normal subgroups of G.2.If G is an abelian group,then for all x∈G and for any subgroup H of G we have xH=Hx.Therefore,any subgroup of an abelian group is a normal subgroup.3.Let H be the subgroup considered in Example3.As we have seen,the sets of left and rightequivalence classes modulo H are not equal,hence H is not a normal subgroup.4.Any intersection of normal subgroups is a normal subgroup.Definition4.3Let R be a subset of a group G.The normal subgroupR=N.N¢GN⊇Ris called the normal closure of R in G.If N is a normal subgroup of G,then by definition the left and right congruence relations modulo N on G coincide,hence we can simply talk about the congruence relation on G modulo N.We shall denote it by“≡mod N”and the quotient set by G/N.Proposition4.4If N is a normal subgroup of a group G,then G/N can be organized with a group structure and the canonical surjection p:G−→G/N,p(x)=ˆx,for all x∈G becomes a group morphism.Proof.For all x,y∈G we define the product of two elementsˆx,ˆy∈G/N byˆx.ˆy= x y.First we have to check that the operation given above makes sense:ifˆx=ˆx andˆy=ˆy ,then x−1.x ∈N and y−1.y ∈N,hence there exist h1,h2∈N such that h1=x−1x and h2=y−1y .It follows that x =xh1,y =yh2,so we deduce that x y =(xh1)(yh2)=x(h1y)h2.Since N is a normal subgroup we get Ny=yN,i.e.there exists h3∈N such that h1y=yh3:x y =x(yh3)h2=(xy)(h3h2)∈(xy)N.Accordingly x y ≡(xy)mod N,and so the definition of the internal operation is correctly defined.We show now that G/N is a group:•Associativity:for allˆx,ˆy,ˆz∈G/N we have(ˆxˆy)ˆz=( x y)ˆz=x(yz)=ˆx( y z)=ˆx(ˆyˆz).(xy)z=•If e denotes the identity element of G,then for each x∈G/N we haveˆxˆe= x e=ˆx= e x=ˆeˆx, henceˆe is the identity element of G/N.•The inverse of an elementˆx isx−1.Indeed:x−1.xx−1=ˆxx−1x=ˆe=x−1ˆx=Tofinish the proof we have to verify that the canonical surjection p that carries an element x∈G into his classˆx∈G/N is a group morphism:p(xy)=p(x)p(y).Indeed:p(xy)= x y=ˆxˆy=p(x)p(y) and this concludes the proof.P Definition4.5The group G/N costructed above is called the quotient group of G relative to the normal subgroup N.Example5.Let us construct the quotient groups of the aditive group(Z Z,+).We assume familiarity with the fact that all the subgroups of Z Z have the form nZ Z with n≥0.In the same time,(Z Z,+)is an abelian group,so it is clear that any subgroup of it is normal.Hence we want to construct a quotient group of the form Z Z/nZ Z,n≥0.Then,we consider two cases:•n=0:Z Z/(0)=Z Z.•n>0:x≡y mod nZ Z⇐⇒x−y∈nZ Z⇐⇒n/(x−y)⇐⇒x≡y mod n, so the congruence modulo nZ Z on Z Z is reduced to the congruence modulo n on Z Z.Finally,Z Z/nZ Z=Z Z/(≡mod n)=Z Z n.5The Fundamental Isomorphism Theorem for GroupsAs we have seen before if f is a group morphism from G into G ,then Kerf is a subgroup of G.We shall prove here that Kerf is a normal subgroup(that is Kerf satisfies one of the equivalent conditions of4.1)and then we shall construct the quotient group G/Kerf.Let x∈G and y∈Kerf.Then xyx−1∈xKerfx−1and f(xyx−1)=f(x)f(y)f(x−1).Since y∈Kerf,f(y)=e (where e is the identity element of G )andf(xyx−1)=f(x)e f(x−1)=f(xx−1)=f(e)=e .Hence xyx−1∈Kerf for all x∈G and y∈Kerf,thus Kerf is normal in G.Now we may consider the quotient group G/Kerf and present one of the theorems which play a major role in what will follow.Theorem5.1(The Fundamental Isomorphism Theorem)If f:G−→G is a group morphism, then there exists a group isomorphism between G/Kerf and Imf,i.e.G/Kerf Imf.Proof.Define f:G/Kerf−→Imf⊆G by f(ˆx)=f(x).First verify that the definition makes sense: letˆx,ˆy∈G/Kerf such thatˆx=ˆy.That means that x≡y mod(Kerf),hence x−1y∈Kerf and so f(x−1y)=e .Since f is a morphism we can write:e =f(x−1y)=[f(x)]−1f(y);it follows that f(x)=f(y),therefore f(ˆx)=f(ˆy).By definition Imf={f(ˆx):ˆx∈G/Kerf}={f(x):x∈G}=Imf,thus f is a surjection.In order to show that f is injective,letˆx,ˆy∈G/Kerf be such that f(ˆx)=f(ˆy).It follows that f(x)=f(y)and hencef(x)[f(y)]−1=e ⇐⇒f(xy1)=e ⇐⇒xy−1∈Kerf⇐⇒ˆx=ˆy,proving that f is bijective.All that remains to do is to prove that f is a group morphism.Indeed,since f is a morphism we get:f(ˆxˆy)=f( x y)=f(xy)=f(x)f(y)=f(ˆx)f(ˆy),for allˆx,ˆy∈G/Kerf.PAs a corrollary we note that in case f is a surjective group morphism,then G =Imf,and thus G is isomorphic to G/Kerf.This result is very often used to establish isomorphisms between groups.Example6.Let(I C∗,.)be the multiplicative group of the non-zero complex numbers and let f:I C∗−→I R∗+be the morphism defined by f(z)=|z|,for all z∈I C∗.It is immediate that f is a surjective group morphism:for all a∈I R∗+there exists z∈I C∗,z=a+0i,such that f(z)=f(a+0i)=a.For all z1,z2∈I C∗we havef(z1z2)=|z1z2|=|z1||z2|=f(z1)f(z2),thus f is a surjective group morphism from(I C∗,.)into(I R∗+,.)and from the fundamental theorem we deduce that I R∗+ I C∗/Kerf whereKerf={z∈I C∗:|z|=1}.6Free Groups.Defining RelationsLet M be afinite(or not)set of symbols(letters)xα,xβ,...and assign to these symbols(by an one-to-one correspondence)another set of symbols denoted by x−1α,x−1β,...called inverses of symbols inM.Definition6.1A word is afinite ordered sequence of symbols(letters)of the form w=xε1α1...xεnαn,εi=+1,1≤i≤n,where no succesive symbols are inverse one to the other,i.e.xεiαi=x−εi−1αi−1,2≤i≤n.The number n is called the length of the word and is usually denoted by|w|=n.The word that contains no symbol is called the empty word and is denoted by1orλ.Its length is obviously0.Example7.Consider M={a,b,c}.Then w1=ab−1,w2=ba−1cb−1a are words and|w1|=2,|w2|= 5.Let X be the set containing the symbols of M and their inverses.The set of all words written with the symbols in X becomes a group together with the following internal operation called juxtaposition:if w1=xε1α1...xεnαn,εi=+1,1≤i≤n,w2=xδ1β1...xδmβm,δj=+1,1≤j≤m are words,their productis defined byw1w2=xε1α1...xεnαnxδ1β1...xδmβm,i.e.by joining the second word to thefirst.If xαn =xβ1andεn+δ1=0(i.e.xεnαnand xδ1β1are inverse)we can cancel the sequence involved andrepeat the operation with the next symbols if necessary.Letter cancelation in a word product is also calledreduction.For instance,if w1=xαx−1βxδand w2=x−1δxβxαxδ,then w1w2=xαx−1βxδx−1δxβxαxδ=xαxαxδ.As we see in this example,some sequences of identical repeated letters of the formxx (x)n times or x−1x−1...x−1n timesmay appear.We agree to denote these sequences by x n and,respectively,x−n.Thus,a word can bedefined as beeing an orderedfinite sequence of letters of the form w=xε1α1...xεnαn,withεi∈Z Z,1≤i≤nand xεiαi =x−εi−1αi−1(no cancelation is possible).In this way the word w=xαxαxβx−1δx−1δx−1δcan berepresented as w=x2αxβx−3δ.The juxtaposition operation is associative.The empty word1is considered to be the identity elementof the set of all words.The inverse of a word w=xε1α1...xεnαnis the word w−1=x−εnαn...x−ε1α1.So wecan speak by now of the group of words written with the symbols of X,called the free group generated by M.The elements of M are called free generators of the free group.The cardinality of M is said to be the rank of the free group.Theorem6.2Any group is isomorphic to some quotient group of a free group.Proof.Let G be a group and M a set of generators of G.Denote those generators by aα,aβ,.... Consider a free group F whose generators system has the same cardinality as M.Between the elements of M and the free generators of F we can establish a bijection and we agree to denote by xαthe element of F associated to aαin M.The map aα xαdefines a group morphism which associates to eachelement g∈G,g=aε1α1...aεnαna word w=xε1α1...xεnαn,εi=+1,1≤i≤n(orεi∈Z Z).According tothe fundamental isomorphism theorem we have G F/N,where N is the kernel of the above morphism. PRemarks.1)The normal subgroup N contains the words whose image in G is equal to the identity.2)The representation of a group as a quotient group of a free group is not unique:it depends on thechoice of M.Keeping the same notations as above,consider a group G.We have seen that there exists a free groupF and a normal subgroup N of F such thatG F/N.Let w∈N,w=xε1α1...xεnαn,εi∈Z Z,1≤i≤n.The image in G of w is the identity element and so we obtain an equality of the formaε1α1...aεnαn=e(1)called relation between the generators aα1,aα2,...of the group G.If we consider in N a subset R such that the normal subgroup generated by R in F coincides to N, then the system of relations of the form(1)which corresponds in G to elements of R is called a set of defining relations of the group G.All remaining relations between the generators of G are considered as consequences of the defining relations,since every element of N can be generated by the elements of R and their conjugates.We state that the group G is completely defined when the defining relations are given.Since R generates N,then the quotient group F/N is completely determined.We conclude that any group can be described by a set of defining relations between some given generators.Thus,a group can be viewed as a pair of sets(X,R),where X is a set of generators and R is the set of defining relations(by a mild abuse of notation we use the letter R also for the set of defining relations).Section8deals with some more details.Examples8.1.Let us define a group that has a single generator a and a single defining relation a n=e.The freegroup F generated by the symbol x,x←→a,is the cyclical infinite group F= x .The set of words corresponding to the defining relation contains a single element:R={x n}.The normal subgroup generated by x n in F is N= x n .Thus G= a x / x n .But since any cyclical infinite group is isomorphic to the aditive group of integers(Z Z,+)and this isomorphism brings x n onto nZ Z,we conclude that:G x / x n Z Z/nZ Z=Z Z n.2.The symmetric group S3can be defined by two generators a and b and the defining relationsa3=e,b2=e,abab=e,where a=123231,b=(1,2).The reader can easily check that ab=(1,3),ba=(2,3).Since any permutation is a product of transpositions it follows that a and b generate S3.If we consider the free group F generated by a and b,then S3 F/H and F will contain the following6elements:a,b,a2,b2=e,ab,ba=a2b.Indeed,since abab=e we get:ab=b−1a−1=⇒a=b−1a−1b−1=⇒ba=a−1b−1;on the other hand,a3=e=⇒a−1=a2and b2=e=⇒b=b−1,so ba=a2b;any other combination of a’s and b’s gives one of the above6elements.Thus we can represent S3by its generators and defining relations as follows:S3= a,b;a3=e,b2=e,abab=e .7Recursive Functions and SetsHistorically,the notion of a computable function has been developed between1931-1947by different, but equivalent,tools:formal equations(J.Herbrand,K.G¨o del,S.C.Kleene),Turing machines(A.M. Turing),Post systems(E.L.Post),and Markov normal algorithms(A.Markov).A remarkable fact is that all these notions are equivalent,in the sense that they“generate”the same class of functions defined on I N,the recursive functions.Definition7.1A function f:I N k−→I N is said to be computable if there exists an algorithm which computes f(n1,...,n k),for every(n1,...,n k)∈I N k.Examples9.1.Let f(x)be the x th prime ing as algorithm the method described by the sieve ofEratostheneses we can compute f.2.Let f(x,y)be the greatest common divisor(g.c.d.)of the positive integers x,y.This function,aswe all kwow,can be computed by Euclid’s algorithm(considering f(x,0)=f(0,y)=0).Definition7.2The following functions are said to be initial(basic)functions:1.The projection functions:P(n)m ,1≤m≤n,defined by P(n)m(x1,...,x n)=x m.2.The constant functions:C(n)m ,m∈I Nfixed,defined by C(n)m(x1,...,x n)=m.3.The succesor function defined by Succ(x)=x+1.Definition7.3A function defined on I N or I N k is said to be recursive if it is an initial function or if it can be generated by an initial function in afinite number of steps,using the following three rules:a)Functional composition(substitution).If f is a k-variables function,and g1,...,g k arefunctions of n variables theng(x1,...,x n)=f(g1(x1,...,x n),...,g k(x1,...,x n))determinates a n-variables function.b)Primitive recursion.If f is a(k+1)-variables function and g is a(k−1)-variables function,then the following system of equations defines an unique k-variables function:f(x1,...,x k−1,0)=g(x1,...,x k−1),f(x1,...,x k−1,y+1)=h(x1,...,x k−1,y,f(x1,...,x k−1,y)).(Dedekind proved the existence and the unicity of these functions.)c)Minimization.If f is a(k+1)-variables function such that for every k-tuple(x1,...,x k)ofnatural numbers there exists a number y with f(x1,...,x k,y)=0,then one can determine a new function g by the condition:g(x1,...,x k)=µy[f(x1,...,x k,y)=0],whereµy[...]means“the least y such that...”.Examples10.1.The sum function f(x,y)=x+y can be obtained by primitive recursion from h(x,y,z)=z+1and P(1)1(x)=x as follows:f(x,0)=x+0=P11(x)=x,f(x,y+1)=x+(y+1)=(x+y)+1=h(x,y,x+y).On the other hand we can write:h(x,y,z)=Succ(P(3)3(x,y,z)), hence we conclude that h is recursive and therefore f will be recursive too.2.The product function f(x,y)=xy is recursive:f(x,0)=x.0=C(1)(x)=0,f(x,y+1)=x(y+1)=x.y+x.1=g(x,y,xy),where g(x,y,z)=P(3)1(x,y,z)+P(3)3(x,y,z)=x+z is a recursive function.3.In the same manner,the exponential function f(x,y)=x y is recursive:f(x,0)=x0=C(1)1(x)=1,f(x,y+1)=x y+1=x y.x=t(x,y,x y),where t(x,y,z)=P(3)1(x,y,z)P(3)3(x,y,z)is recursive(we agree that00=1).Fix a set S⊆I N.Following Leibniz there are two basic algorithmically ways to“define”S:a decision method and a generating ing the notion of recursive function,we can give a precise version of these two techniques:•The generating methodDefinition7.4A set S of natural numbers is called recursively enumerable if S=∅or if there exists a recursive function f:I N−→I N whose range coincides with S.We shall say in this case that the function f generates(enumerates)the elements of S.•The decision methodDefinition7.5A set S of natural numbers is said to be decidable(recursive)if its characteristicfunction f S,f S(n)=1,if n∈S,0,otherwise,is recursive.If f S is recursive,one can decide whether an arbitrary natural number n is or not an element of S.Examples11.The following sets are recursive:1.S={2n:n≥0},2.S={n:n is prime}.Remark.A set S is recursive iffboth S and its complement I N−S are recursively enumerable.So,if S is a recursive set,then S is recursively enumerable.The converse is not true(see Section9).The notions of recursive function,recursive and recursively enumerable set can be extended from I N to I N n and,then,to Z Z n,for every n>0.Theorem7.6Cantor’s function J:I N2−→I N defined byJ(x,y)=(x+y)(x+y+1)/2+xis a recursive bijection.The reader interested on the proof is referred to[3].Thus we have got an encoding scheme which allows us to identify,in a recursive manner,the sets I N and I N2.J is called the Cantor numbering and the number J(x,y)is referred to as the Cantor number associated to the pair(x,y).The decoding associates of J are usually denoted by K and L and so we have:J(K(z),L(z))=z,K(J(x,y))=x,L(J(x,y))=y.Cantor’s function can be extended to a recursive bijection J(n):I N n−→I N,for every n≥3withdecoding associates denoted by I(n)1,...,I(n)n.Definition7.7A functionΦ:I N n−→I N n is recursive if there exists a recursive funtion f:I N−→I N such thatΦ◦I=I◦f,where I:I N−→I N n,I=(I(n)1,...,I(n)n)is the inverse of the generalized Cantor’s bijection.Consider now a bijectionα:I N−→Z Z and its extensionα(n):I N n−→Z Z n,α(n)(x1,...,x n)=(α(x1),...,α(x n)).Definition7.8A functionΨ:Z Z n−→Z Z n is recursive if there exists a recursive functionΦ:I N n−→I N n such thatΨ◦α(n)=α(n)◦Φ.Thus,the definitions for recursively enumerable and recursive sets can be extended for the subsets of I N n and,respectively,of Z Z n.Let F be a non-empty set such that there exists a one-to-one correspondence f between F and the natural numbers.We say that f is a G¨o del numbering for F and the set Im f is called the set of code-numbers(or G¨o del numbers)of F.Definition7.9The set F is said to be recursive(recursively enumerable)if the corresponding set of code-numbers is recursive(recursively enumerable).8Recursively Presented Groups.Free Products with Amalga-mation.HNN-ExtensionsGroups are often described as quotient groups of some free groups:G F/N.If F is a free group with basis X and N is the normal closure in F of a set R,then we say that the pair(X;R)is a presentation for G,and-by convention-we write G=(X;G)(see examples given in Section6).If X is the set of images x in G of all elements x of X by the canonical surjection(x→x∈F/N)then, since a surjective morphism carries systems of generators into systems of generators,X is generating G. If r=r(x1,...,x n)is an element of R(hence a word written with generators x1,...,x n),then we get r(x1,...,x n)=e in G,that is a defining relation.The elements of R will be called relators.A presentation(X;R)isfinitely generated if X isfinite and isfinite if both X and R arefinite sets. In this last case we often say that the group G has afinite presentation or isfinitely presented.We say that a presentation(X;R)is recursive if X isfinite and R is recursively enumerable.。

英语翻译基本词汇

英语翻译基本词汇

英语、高翻专业人的菜从无到有开始Begin, start, begin with, spring, start up, set off on, br eak out, strike up, originate from,;Initiate, launch, originate, sprout; unfold; unleash outset, onset,Rudimentary, elementary,出现Appear, appear to be, emerge, arise, loom, turn out, s how up, com out, come into sight/view, come forth发生Happen, occur, take place, come about,Happening occurrence产生,创造create, produce, bring about, yield, give birth to, bear, bring into being, generate, beget,germinate; Invent, innovate, renovate, plan, design, imagine, conc eive, devise, formulate, imagine, envision,建立Found, set, built up, construct, institute, constitute, set up, establish制造,组成Make, make up, produce, construct, turn out, manufact ure, form, shape, compose, compile, concoct, fabricate 生长壮大复制,繁殖58Copy, duplicate, reproduce, multiply.发育,发展Grow, develop, breed, bring up, nurture, cultivate, hon e, raise, foster, (主动)Develop, advance, progress, move forward, go forward, proceed(自我成长)Burgeon, flourish, thrive, bloom, blossom, boom, prosp er;保持,延续Continue, last, carry on, keep on, keep, remain maintai n retainPerpetuate,Persevere, stick with, insist on, persist in, Continuous, incessant, permanent, constant, steady, un broken, perpetual, everlasting, eternal, lasting, unendin g, uninterrupted, undying, immortal, invariable,存在,生存Exist,found, stand, lay in, be rooted in,be embedde d in,Substance, matter, object, material, stuff, things, entit y,individual, creature, beings,Topic, subject, issue, theme, gist, item, content, point,Extant, existing, in existence, substantive, ubiquitous, o mnipresent, universal,survive,outlive,outlast, remain alive,Endure, undergo,从有到无结束,停止53stop,finish, be over, cease, discontinue, wind up, bring to an end(close, halt), end,come to an end, end up, terminate,quench,quell,run out, expire, conclude adjourn/dissolve/lull/subvert,abortaive,Surcease, cessation,impasse, deadlock, logjam, stalemate,Ultimate, final, eventual,Abeyance, suspend, interruption, brake, halt, pause,死亡,毁灭Perish, annihilate, kill, exterminate, take life, slay, hatc het, slaughter, assassinate, famish, smother, throttle, st rangle, stifle, decimate,Die, pass away, perish, expire, run out,decease, death, demise,Defunct, moribund, dying,Fatal, formidable, deadly, fatality.取消,废除550Cancel, annul,call off, do away with,Abolish, desuetude, disuse, abandon, repeal, revoke, in validate, rescind, nullifyObsolete, out of date, outmoded, out of fashion, old-fa shioned,除去551Remove,erase,delete, extinguish, exterminate, elimina te, eradicate, extirpate, efface,clear away, throw away, do away with, wipe out, get rid of , rule out, Obliterate, expurgate, expunge, purify, purge,破坏Destroy, damage, wreck, devastate, raze, ravage, knoc k down, demolish, vandalize, tear down, ruin, spoil, dil apidate,Perdition,detrimental,harmful, injurious,topple down/inclement/伤害Damage Bruise, mar, maul, do harm to, injure, wound, hurt, impair, harm, hurt, wound, harm, break, fracture, maim, cripple, mangle, mutilate;cut, gash, fracture, break灾祸Disaster, catastrophic, calamity, cataclysm, carnage, ma ssacre, holocaust, decimate, wreck, accident, Misfortune, hapless, mishap,逐渐消亡Rot way, perish, decay, disintegrate, decompose, deteri orate, molder, aggravate, worsen, exacerbate, corrupt, Rotten, decayed, corrupt, damaged;decrepit ,decrepitude, dilapidate状态之改变正面能力,强,权力Enable, facilitate, empower, entitle, enhance, Strengthen, reinforce, sustain, countenance, consolidate, Able, be capable of doing , competent, potent, omnipo tent, puissant, resourcefulAbility, capability, capacity, skill, forte,competence, fac ultyIntelligence, aptitude, flair, talentClever, bright, talented, astute, wisdom, wise, smart, a cumen,Hegemony, puissance, resource, power, energy, authori ty, influence, impact, supremacy, potency, strength, for ce, vigor;大Aggrandize, amplify, augment, broaden, widen, extend, enlarge, magnify, enlarge,Exaggerate, overstate, overstress, overemphasize,多,增加Enrich, increase, add to, abound, fill, fill up, replenish, stock up, add, put in, raise,Accrue, mount up, augment, accumulate, rise Abundant, plentiful, more than enough, profuse, copiou s, rich, wealthy, generous, numerous, in great number s;sufficient, enough, adequate, ample, as much as neces sary,Increment, accretion, growth, augmentation,高Raise, lift up, improve, enhance, elevate, escalate, hea ve, heighten, hoist,Rise, increase, ascend, mount, go up, climb scale, jack up, skyrocket, surge, upsurgeHigh, tall, in height, lofty, towering, lanky;Height, stature, elevation, altitude有助Help, assist, aid, subsidize, help to, conduce to,, contri bute to, function to, be of assistance, lend a hand, fac ilitate, enhance,Helper, aide, assistant, accessory, ancillary, accomplice, auspices,支持Support, bolster, boost, brace, buttress, espouse, propo nent, underpin, embrace, exponent,快216Accelerate, hasten, speed up, quicken up, expedite Run, scurry, scuttle, scamper, prance, gallop, sprint, sc ud, Dart, fleet, rush,Fast, quick, rapid, swift, expeditious, speedy, fleeting, b riskSpeed, swiftness, pace, velocity, rapidity, tempo, rate, quickness, promptness,有效,起作用Effective, efficient, effectual, successful, useful, helpful, functional, applicable, operative, working, active, functio ning, in operation, in use,Available, serviceable,Impact, influence,自由,解脱Release, free, set free, set off, liberate, unshackle, unf etter, emancipate, manumit, disentangle, untangle, extri cate, unravel,中性变Change, alter, modify, vary, turn, become, adjust, ame nd, transform, distort, modulate, transmute, shift, trans figure,Fluctuate, move, revolutionize, alternate, shift Diversified, volatile, fickle, mercurial, protean, erratic, e ccentric, irregular, inconsistent,Changeable, unsettled, variable, malleable, mutable, Change, alteration, variation, modification, transition, re novation, recondition, mutation;修改Redress, rectify, revise, emend, renovate, innovate, rec ondition,负面弱Weaken, enervate, vitiate, sap, impair, emaciate, attenu ate, diluteWane, sag, fade, flag, deteriorate, exacerbate, wither, blight, dry up, wilt, sere, sear, shrink, shrivel, Weak, feeble, effete, wan, frail, lacking in strength, im potent, feeble, lethargicInfirmity, weakness, decadence, decadent,减少,降低Lower, reduce, decrease, drop off, abate, decline, dwar f, dwindle, rarefy, curtail, shorten, abridge, truncate, d ock, decline, slump, eclipse, subside, shrink, ebb, Diminish, lessen, debase, dilute, moderate, die down, g row less intense, cut down, ebb, cut back,慢Decelerate, slow, slow down, retard, hold back, Slow, sluggish,Postpone, put off, delay, defer, procrastinate, adjourn, Dilatory, tardy, slack, sluggish,平息reconcile, comfort, placate, conciliate, reassure,allay, c alm, console, soothe, pacify, assuage, mitigate, palliate, salve, temper,palliation, reconciliation,禁止,限制Prohibit, proscribe, forbid, ban, restrain, interdict, overr ule, veto, stop fromLimit, restrict, confine, blockade, fetter, shackle, circum scribeProhibited, forbidden, banned, illegal, outlawed, proscrib ed, taboo;Durance, taboo,控制, 抑制Control, wield, hold, steer, helm, maneuver, manipulate, dominate, regulate, rein in, direct, rule, govern, reign, regimentCurb, bridle, yoke, restrain inhibit smolder, suffocate,refrain from阻碍455Hinder, hamper, check, stunt, impede, block, obstruct, retard, interrupt, hold back, prevent from, forestall, kee p from, deter from, discountenance, lumber, thwart, st em, stymie, frustrate, stump, stem,Entangle, enmesh, ensnare, entrap,Barrier, obstacle, obstruction, impediment, setback, hind rance, hurdle, blockade, blockage,morass, predicament, plight, straits, quandary,strait,预防Forestall, proselytize, preclude, prevent,干预432Interfere, intervene, intercede, meddle, annoy, vex, net tle, perturb, disturb, discomfit, molest, pester, bother, annoy, harass, intrude,Mediate,Inroad, raid, assail, assault, attack, trespass, infringe, a ttack, foray, intrude, encroach,Turbulence, disturbance得到,付出付出给Give, offer, endow, endue, present, bestow, provide, s upply, furnishImpart, instruct, apprise, teach, instill, inculcate, Proffer, confer, donate, contribute, subscribe, bequeath,Issue, flow out, release,支出Cost, spend, pay, pay out, expend, disburse, Prodigal, profligate, splurge, spendthrift, dissipate frugal, scrimp, skimp, abstemious,Expenditure, subvention,归还,偿439Return, hand out, restore, reciprocate, remunerate, rev ert,Compensate, reimburse, indemnify, expiate, atonement, Salary, remuneration, Emolument, honorarium,分配Distribute, allocate, issue, hand out, apportion, allot, di spense, ration, allot, assign, designate; Distribution, dispensation ration, allotment施加impose, entail, exert, inflict, suppress, subjugate, compr ess ,repress, coerce,使满Suffice, satiate, satisfy, cater, sate, meet requirement, gratifySuffuse, implant, instill, infuse, fill, impregnate,放弃Relinquish, give up, disclaim, abdicate, abjure, waive, r enounce, recant, wean, forsake, abdicate, desert, forsw ear, renounce, repudiate, forgo, disown, disavow, aban donRenunciation,获得得到Get, receive, Accept, attain, acquire, obtain, gain, repo ssess, retrieve, procure, catch,Earn, profit, embezzle, peculate, defalcate, graft, appro priate,Obtainable, accessible, receptive,Receiver, recipient, procurement夺Deprive, take away, exact, extort, dispossess, bereave, divest, strip,Loot, ravage, ransack, sack, despoil, plunder, rapine, s natch, ,exploit, distill,Confiscate, impound, sequestrate, forfeit, expropriate Exaction, depredation, spoliation,吸引Attract, appeal, fascinate, draw, charm, intrigue, encha nt, tempt, allure, enchant, enthrall, rivet, fix, spellbind, intoxicate, engross, occupy, captivate, enamor,Attractive, appealing, charming, pleasing, attractiveness, fascination, charisma, personal, magnetism, attraction, fascination,包含510Contain, consist of, comprise, cover, encompass, span, contain, encompass, subsume, consist of, include, invol ve, embroil, implicate, ;Configuration component,需要,Require, call for, need, demand, necessitate, Necessary, required, requisite, essential,Requisite, prerequisite, requirement, precondition,使使Cause to be, make, lead to, render, turn into, trigger, activate, cause,要求,请求,Request, ask, entreat, demand, petition, appeal to Solicit, invoke, plead, implore, beseech, adjure, Dictate, command, mandate, order, instruct, charge, Imperative, essential, compulsory, mandatory, urgent, o bligatory,Request, requisition, petition, invocation;促使,劝说,Advise, urge, argue, advocate, persuade, sway, influenc e,Convince, expostulate, exhort, hortative刺激,激发,鼓励Stimulate, activate, spur, incite, agitate, inspire, arouse, excite, provoke, actuate, incite, foment, stir up, trigge r, Kindle, enkindle, igniteencourage, motivate, invigorate, prompt, instigate, Impetuous, impulsive;Drive, motivation, incentive, inducement, impetus推动,驱动,迫使Push, drive, propel, force, oblige, propel, compel goad 威逼利诱欺骗,伪装Deceive, dupe, cheat, swindle, hoodwink,Disguise,Duplicity, artifice, chicanery, deception, scheme, subterf uge, duplicity.引诱Beguile, lure, tempt, allure, entice, tantalize, coax, delu de, cozen, beguile,,Guile, deceit, cunning, wile, trickeryWily威吓Threaten, menace, intimidate ,hector, frighten, bully, Threatening, menacing,Threat, menace允许,承认Allow, let, permit, licenseAllowance, license, permission, consent, sanction, autho rization心理想要期望Expect, look forward to, wait for, look ahead to, suppo se, anticipate, await欲望,欲求Wish, want, desire, long, yearn, aspire, crave, hanker, covet:Desirous, eager, avid, greedy, acquisitive, much desired, coveted, ambitious, enterprising;Longing, aspiration, yearning, ambition, avarice, desire for, appetite, desire意图Intend, tend to, mean, plan, be inclined to, predispose, resolve, prone to, apt to, disposed to, attempt to, ai m to, be set to, have in mind, slantIntentionally, purposely, deliberately, consciously, Intention, motive, tendency, trend, proclivity, inclination, acclivity declivity,Liable, inclined to, willingly, likely不愿意Waver, hesitate, oscillate, vacillate, boggle, pause, falte r,reluctant, unwilling,irresolute, indecisive, undetermined, uncertain, undecided, unsure,Reluctantly, unwillinglyReluctance, unwillingness认知感觉,察觉Sense, feel, savor, be conscious of, be aware of, regai n consciousness, perceive, Cognize, regard,Detect, identify, notice, recognize, observe,Heed, pay/give heed to, take heed/notice of, notice, p ay/give attention toConscious, aware capable of feeling, sentient, percipien t, cognizant,Consciousness, awareness, feeling, sense, sensation, Attention, heed, notice思考Think, consider, ponder, speculate, contemplate, reflect, muse, ponder, contemplate, muse, meditate, ruminate, chew, deliberate, take into account, take into consider ation, cross one's mind, flash across one's mind, pass t hrough one's mind, occur to sbthoughtful, meditative, pensivethought,consideration,reflection,contemplation理解know, understand, realize, appreciate, grasp, apprehend, figure out, be informed about, read, make out, go on e’s idea across, decipher, decode, recognize, comprehe nd, be acquainted with, be familiar with,忽视,忘记, 没感觉Forget, not remember, neglect, ignore, overlook, disreg ard, pay no attention to, take no notice ofCondone, excuse, and forgive, pardon, absolve, exoner ate, extenuate,Oblivious, remiss, delinquent, negligent, Neglectful, forgetfulOblivion, remission, omission.Amnesia, amnesty, inattention, oversightIgnorant, unknown,unconscious, unaware, insensitive, unresponsive清楚clarify, elucidate, shed light on, illuminate, make clear explicit, overt, precise, unambiguous, plain, clear, uneq uivocal,clarity, clearness, lucidity, transparency, simplicity, preci sion.迷惑Confuse, puzzle, muddle, bewilder, perplex, baffle, non plus, flummox, disconcert, confound, mix up, fluster, o bscure, obfuscate, perplexQuandary, dilemma, plight, predicament,态度正面赞成,同意Approve, endorse, grant, confirm, ratify, agree with, co nsent, endorse, approbate, assent, approve, accord, ag ree, accede, resonate,Unanimous, in full accord,Approval, agreement, concurrence, unanimity, approbati on. Uniformity, consistency, endorsement, confirmation, ratification, sanction,allow, permit, let, consent to肯定,相信Certain, sure, ascertain,positive, confident, convinced, assured,Inevitable, certainly, surely, positively, definitely, confid ently, assuredly, inevitably, undoubtedly, unquestionably, unequivocallyBelieve, trust, entrust, have faith in,fidelity, loyalty, faith, affidavit, conviction,喜欢,赞美Love, be fond of, like, favor,worship, adore,Laud, praise, commend, extol, exalt, exult, eulogize, ho nor, pay tribute to,hymn, paean, carol, psalm, encomium,不喜欢,Loath, hate, dislike, abhor, repulse, repel, abominate, d etest,Heinous, odious, hateful, repellent, repulsive, repugnant obnoxious,Aversion, odium, aversion, revulsion, abhorrence,不同意,反对Disagree, dissent, reject, and disallow discord, Contradict, gainsay, say the opposite to, oppose, count er, be in opposition to, go up against, defy, controvert, impugn,Inconsistent, contradictory, in disagreement, at odds Disharmony, dissonanceOpposing, dissenting, opposite, contradictory, override c ontrariwise, oppositely;Dispute, argue,反驳Refute, rebut, retort, deny, confute, contest, disprove 羞辱,贬义Embarrass, humiliate, disgrace, dishonor, mortify, deme an, discomfit, degrade, undermineEmbarrassed, ashamed, unembarrassed, unabashed Humiliation, chagrin忧虑Worry about, fret over, feel anxious, uneasy about, be concerned about,fret, agony,Anxious, uneasy;Anxiety, concern, uneasiness, disquietedness, nervousne ss疑问,不相信Doubt, query, question, inquiry,Discredit, distrust, disbelieve, mistrust, suspect, be susp icious of, have doubts aboutDoubtful, misgiving, skeptical, dubious, incredulous,;Doubt, incertitude, questioning, skepticism, implausibility, incredibility批评,谴责Criticize, censure, condemn, denounce, attack, rail, reb uke, blame, reprove, reprimand,reproach; diatribe, reproof, reprimand分久必合,合久必分合,和同,等, 似Accord, match, equal, like, resemble, approximate, Same, unified, matching, much the same, be similar to, akin to, the same as, equivalent, identical parallel Equivalent, congruity, concord, parallel, similarity, parall elism, tantamount, tally,Resemble, bear a resemblance to, be like, look like, si mulate, take after, imitate, mimic, copy, emulate,比较Compare, contrast, weigh against, judge against, balan ce, parallelComparatively, relatively适合Suitable, fit, suited, proper, right, appropriate, apposite, apropos, opportune, fitting, apt,suitably, properly, rightly, appropriately, fittingly, aptly,相容Compatible, well-matched, well-suited, attuned, compani onable, congenial, affable, amicable, Accommodate, Harbor, lodge,陪伴Accompany with, go along with, go together with, go with, come with, keep sb. Company, join, escort, conv oy, cling to合作,合并Work together, cooperate, come together, and collabor ate, join forces, team up,Merge, unite, connect, bond, bring together, combine, associate, amalgamate, swallow up, become one, come together, Affiliate, annex, coalesce, incorporate, integr ate, put together, join together.Involve, embroil, include,Weld, join, solder,Merger, combination, solidarity, coalition, cohesion, con glomeration, agglomeration, confluence, Rapport, rappro chement, inseparable,聚集Gather, accumulate, amass, collect, pile up, heap up, c ompile, assemble, garner, convene, summon, organize, call together,swarm, throng, teem, crowdRally, confer, muster, congregate, aggregate, put toget her, amass, convoke, convene, collect a supply of; Collection, group, multitude, flock, herd, array, accumul ation, accretion, backlog.Gregarious,联系,依靠Link, relate, connect, associate, correlate, attach, fasten, clinch, cling to, tie, adhere, affiliate, pertain, trace; Relevant, pertinent, germane,Link, bond, nexus, linkage, relationship, attachment, Rely on, trust, depend on, count on;Reliable, foolproof, dependable, independent, sovereign; trust, reliance, dependence,整体,全部,广义Complete, total, entire, full, whole, thorough, comprehe nsive, all-round, versatile, plenaryGenerally, entirely, fully, wholly, thoroughly, exhaustivel y, usually, largely, mainly, mostly, for the most part, o n the whole, in generalAll over, throughout;交易,遇见,互相Trade, exchange, deal, do business, transact, interact, i ntertwine, swap, switch,Trade, commerce, interplay, commodity, goods, mercha ndise, transaction, interactionMeet, encounter, run into, run across, come across, ha ppen to see, discover;Mutual, reciprocal, vice versa,遵守,认同Obey, comply with, act upon, follow, meet the terms, act in accordance, submit, observe, conform, Accordance, tractable, obedient, ductile, compliant, docil e, manageable, tame,分分开,部分Divide, break up, separate, undo, seclude, sever, divers ify, bifurcate, ramify, disconnect, cede, sunder, asunder, part, partition, isolate, part, detach,Exclude, occluded, preclude, segregate, seclude Disband, dismiss, scatter, estrange, segment, cleave, rif t, disintegrate, split up, fall apart, collapse,Fission, crevice, partition, detachment, secession, Section, aspect, feature, facet, respect, side, sector, div ision, part, segment, fragment, piece, portion背离Digress, deviate, diverge, astray, depart, swerve, deflec t, defection, apostate, betray, divagate, secede egress, Perfidious, infidelity, disloyal, unfaithfulness, disaffected,不同Different, dissimilar, unlike, incongruous, discordant, dis parate,Multifarious, motley, various varied, diversified, Diversity, shade, nuance, disparity, discrepancy, differen ce, variance, multiplicity,不相容,不适合Incompatible, mismatched, unsuited, discordant, inharm onious, unsuitable, improper, wrong, inappropriate, inop portune, unfitunsuitably, inappropriately,违背,对立Contravene, defend, break, breach, disobey, counter, re sist, violate, defy, flout, infringe,infraction,对立争,斗,努力Compete, via, contend, struggle, wrestle, tussle, challen ge, fight against, emulate, rival, conflict, contest, strife, confront, face up to,Strive, make an effort, endeavor to, try to do, attempt to do, struggle;Effort, attemptantagonistic, hostile, friction躲避Avoid, escape, keep away from, stay away from, shun, wince, flee, run away, flight, parry, evade, dodge, sid estep, elude, shirk,成Win, succeed, triumph, prevail, outstrip, outwit, transce nd, exceed, surmount, overcome surpass,Fulfill, complete, accomplish, finish, achieve, reach, app roach, realize, soar,Subdue, suppress, override, overrule, subvert, topple, Consummation, achievement, feat, attainment, accompli shment.Accessible, reachable, attainable, obtainable, approacha ble,败Fail, be unsuccessful, be abortive, flunk, founder, bungl e, sink, be fruitless, bungle, blunder, bumble, muff Failure, abortion, crashstranded,处理对付,处置Deal with, cope with, and dispose, handle, manage, pr ocess,Disposition选择Choose, select, favor, prefer, pick,传递Transmit, pass, hand on, transcribe, transfer, move, co nvert, convey, send, ferry, transport,Impart, inculcate, instruct, teach, inform, apprise, pass ontransfusion,采用,利用Make use of, use, employ, utilize, exploit, consume, ha rness, assume, take on手段,工具By means of, by way of, by virtue of , method, mann er, means, device, instrument, facility, implement, appa ratus, appliance, mechanism, gadget, utensil, tools, contrivance, maneuver, tactic, mean, expedient, stratag em, tact, ploy,artifice, chicanery, scheme, plan, project, program行为,Act, perform, behave, work, serve as, operate, run, fun ction to, conduct;Be engaged in, carry on, indulge in, participate, endea vor to, take part in, devote to, dedicate to, Behavior, demeanor, conduct, action, performance,信息处理表达说,表达say, tell, talk, speak, utter, express, voice, state, articul ate, pronounce, emote,Declare, pronounce, claim, announce, address, intimate Equivocate, prevaricate, prattle, stammer,chat, discuss, converse, bargain, negotiate,talk, chat, discussion, debate, conversation, colloquySuggest, propose, present, put forward, recommend, a dvocate, advise, posit, aver, allege, postulate, propound, tender,Hint, imply, insinuate, allude,描述Describe, depict, illustrate, limn, recount, portray, repre sent, define, characterize, delineate, sketch out,; description, version解释,说明Explain, interpret, explicate, detail, clarify, make clear, construe, misconstrue, elucidate, shed light on, deciphe r,, expound, disabuse, explain in detail, account for; Exposition, exhibition, connotation, exegesis, gloss anno tate,Show, demonstrate, evince, indicate, display, exhibit,获取信息观察,探求observe, view, see, spot, watch, notice, make out, perc eive, bring attention to, be aware of,distinguish, discern, detect, scrutinize, monitor, study, s ight, inquire, probe, search, explore,Search, grope, probe, plumb, fathom, research, quest;调查,检查Inspect, examine, scan, study, check, investigate, censo r, peruse, look into, look over, scrutinize, survey, Inspection, examination, census, censor, investigation, s crutiny, survey, inquiry, census, poll纪录,记载Record, register, document ,write down, take down, pu t down, note down, detail, keep details,逻辑分析证明Analyze, consider, infer, extrapolate, prove, justify, conf irm, verify, validate, testify, attest, authenticate, substa ntiate, give evidence, corroborate假设Presume, assume, suppose, imagine, premise, surmise, 推断Induce, infer, deduce, reason, derive from, ratiocinate, conclude,因果result from, result in, according to, attribute to, ascribe to, credit to, account for, derive from, arise from, proof, evidence, inference, conclusion,convince,cogent, sound, logical, rational,真,正确True, right, correct, proper, real, actual, genuine, verita ble, veracious, authentictruly, really, actually, in fact, authentically, realistically, pragmatically;genuinely veraciously,faultless, impeccable, in the right wayTruth, canon, criterion, norm, axiom, veracity. Rationale, truism, maxim,correct, revise, rectify假,错False, wrong, incorrect, fallacious mistaken, erroneous, unreal, errant, faultyFake, sham, phony, pretended, simulated, pseudo Mistakenly, erroneously;Mistake, error, fault, fallacy, misconception, illusion;take A as B, confuse A with B, mistake A for B, erron eously identify A as B, falsify,发现, 揭示Discover, find out, learn, reveal, disclose, unveil, expos e, divulge, make known, debunk, declassify, decode, d ecipher, translate, make out, revelation,其它强调的,Absolutely, incontrovertible, indispensable,indisputable, inalienable, indubitable, incontestable, irrefutable, incont rovertible;重要的Consequential, imponderable, paramount, substantial, m ajor, significant, important, leading, major, dominant, p redominant, prevailing, key, pivotal, decisive, critical, cr ucial, basic, fundamental, radical, essential, primary, int egral, inherent, indispensable, necessary优缺点Advantage, benefit, advantageous, valuable, precious, p ositive, positive aspect, helpful, asset, valuable quality. Disadvantage, drawback, weakness, shortcoming, downs ide, negative aspect, unfavorable feature.明显的,突出的,优秀的,杰出的Obvious, apparent, evident, conspicuous visible, notewo rthy, noticeable, notable, manifest, outstanding, remark able, salient, prominent, eminent, distinguished, striking, extraordinary, excellent, monumental, phenomenal,主要mainly, chiefly, principally, predominatly, basically, fund amentally, primarily, inherently,。

Abundances in plantetary nebulae Me 2-1

Abundances in plantetary nebulae Me 2-1

Received 9 January 2004 / Accepted 16 March 2004
Abstract. ISO and IUE spectra of the round planetary nebula Me 2−1 are combined with visual spectra taken from the literature
Astronomy & Astrophysics manuscript no. aa0041-04 (DOI: will be insertendances in planetary nebulae: Me 2−1
R. Surendiranath1 , S. R. Pottasch2 , and P. Garc´ ıa-Lario3
Send offprint requests to: R. Surendiranath, e-mail: nath@iiap.res.in Based on observations with ISO, an ESA project with instruments funded by ESA Member States (especially the PI countries: France, Germany, The Netherlands and the UK) and with the participation of ISAS and NASA. This research has also used archival IUE and HST data. Tables 4 and 7 are only available in electronic form at
The purpose of this paper is to determine the chemical abundances for this nebula and to derive parameters like T eff , log g, etc., of its central star more accurately than before. This is achieved first by including the ISO (Infrared Space

英文小学口语对话教案模板

英文小学口语对话教案模板

Objective:To develop students' speaking skills through engaging in meaningful conversations, focusing on basic sentence structures and vocabulary related to a specific theme.Grade Level:Elementary School (Grades 3-5)Duration:1 hourMaterials:- Whiteboard or blackboard- Markers or chalk- Flashcards with pictures related to the theme- Student handouts with key vocabulary and phrases- Timer (optional)- Computer or projector (optional) for showing videos or slidesPreparation:1. Select a theme that is relevant and interesting to the students, such as "Family," "Animals," or "Foods."2. Prepare flashcards with pictures that correspond to the theme.3. Create a handout with key vocabulary and phrases that will be used in the conversation.4. If available, find or create a short video or slideshow that can be used to introduce or reinforce the theme.Lesson Plan:Warm-Up (5 minutes):1. Greet the students and ask them how they are feeling today.2. Have a brief discussion about the theme using simple yes/no questions.- Example: "Do you like animals? Why or why not?"Introduction (10 minutes):1. Introduce the theme using the video or slideshow.2. Show the flashcards and have the students guess what each picture represents.3. Explain any new vocabulary that may appear on the flashcards.Activity 1: Pair Work (15 minutes):1. Divide the class into pairs.2. Distribute the handouts with key vocabulary and phrases.3. Instruct the students to practice using the vocabulary and phrases with their partners.- Example: "A: My favorite animal is a cat. B: That's cool! Do you have a cat at home?"4. Circulate around the classroom to monitor and assist students as needed.Activity 2: Role-Playing (15 minutes):1. Create a simple role-play scenario related to the theme.- Example: A "Family Shopping" scenario where one student plays the role of a parent and the other as a child.2. Demonstrate the role-play with a volunteer or the teacher.3. Instruct the students to perform the role-play in pairs, using the vocabulary and phrases from the handout.Activity 3: Group Discussion (10 minutes):1. Divide the class into small groups.2. Ask each group to discuss a specific question or topic related to the theme.- Example: "What is your favorite food and why?"3. Have each group report back to the class, using the vocabulary and phrases learned.Cool-Down (5 minutes):1. Have a brief wrap-up discussion with the class, asking them to share what they enjoyed or learned during the lesson.2. Review any key vocabulary or phrases that were difficult for the students.Assessment:- Observe the students' participation and speaking skills during the activities.- Collect the handouts to assess their understanding of the vocabulary and phrases.- Conduct a short informal interview with each student to evaluate their ability to use the target language in a conversation.Homework:- Assign a simple writing task related to the theme, such as writing a short paragraph about their favorite family member or animal.- Encourage students to practice speaking with their family members or friends using the vocabulary and phrases learned in class.Reflection:At the end of the lesson, reflect on what worked well and what could be improved for future lessons. Consider how the students engaged with the activities and whether the vocabulary and phrases were appropriatelychallenging for their level. Adjust the lesson plan as needed for the next class.。

小学信息技术教案英文输入活动语句输入

小学信息技术教案英文输入活动语句输入

小学信息技术教案英文输入活动语句输入In this article, we will discuss a lesson plan for teaching English input activity sentences in elementary school information technology classes. This plan aims to help students improve their English skills and develop basic technological competence simultaneously. The lesson plan includes objectives, materials, procedure, and assessment methods.Objectives:1. To introduce students to basic English input activity sentences.2. To enhance students' understanding of technology-related terminology in English.3. To develop students' typing skills and accuracy.4. To foster collaboration and communication among students.Materials:1. Computers or tablets with internet access.2. Word processing software or online platforms for sentence input.3. Pre-prepared English input activity sentences related to the students' current learning topics.4. Worksheets or handouts for additional practice.Procedure:1. Introduction (10 minutes)a. Engage students by providing a brief overview of the importance of English and information technology in today's world.b. Explain the objective of the lesson and its relevance to their learning.c. Provide examples of English input activity sentences and discuss their purpose.2. Vocabulary and Terminology (15 minutes)a. Present a list of technology-related English vocabulary words. Teach their meaning and pronunciation.b. Write the words on the board and encourage students to practice saying them aloud.c. Discuss the usage of each word in the context of information technology.3. Sentence Input Activity (35 minutes)a. Divide students into pairs or small groups.b. Provide each group with a computer or tablet and access to word processing software or online platforms.c. Distribute the pre-prepared English input activity sentences related to the students' current learning topics.d. Instruct students to take turns typing the sentences on their devices, using correct vocabulary and grammar.e. Encourage students to collaborate and help each other as they work through the sentences.f. Monitor the groups, providing guidance and support when needed.4. Practice and Consolidation (20 minutes)a. Provide additional worksheets or handouts for students to practice typing sentences independently.b. Ask students to review and proofread their sentences for accuracy and correct any mistakes.c. Engage students in a discussion about their experience with typing sentences in English and how it relates to their information technology learning.5. Assessment (20 minutes)a. Conduct a quick evaluation to assess students' understanding and improvement in English input activities.b. Ask each student to type a sentence related to the current learning topics.c. Evaluate the accuracy of their sentences, grammar usage, and typing skills.d. Provide constructive feedback to encourage further improvement.Conclusion:The English input activity sentence lesson plan provides an engaging and interactive approach to teaching information technology in elementary schools. By combining English language skills with technology, students can develop essential competencies in both areas. The lesson plan focuses on enhancing students' English vocabulary, improving their typing skills, and fostering collaboration among peers. This integrated approach contributes to a well-rounded education and prepares students for the digital and globalized world they will face in the future.。

除法的由来简单介绍

除法的由来简单介绍

除法的由来简单介绍The concept of division has been around for thousands of years, dating back to ancient civilizations such as the Egyptians and Babylonians. 除法的概念已经存在几千年了,可以追溯到古埃及和巴比伦等古代文明。

These early civilizations used division primarily for practical purposes such as measuring land and allocating resources. 这些早期的文明主要利用除法来进行实际用途,如测量土地和分配资源。

As time passed, the concept of division evolved and became a fundamental operation in mathematics. 随着时间的推移,除法的概念不断演变,并成为数学中的一项基本运算。

Today, division is taught in elementary schools around the world and is used in a wide range of applications, from everyday tasks to advanced scientific research. 如今,除法在全世界的小学中都被教授,并在各种应用中被使用,从日常任务到先进科学研究。

The origins of division can be traced back to the early civilizations that needed a way to divide resources and measure land. 除法的起源可以追溯到那些需要一种方法来分配资源和测量土地的早期文明。

上周学校组织了一次义卖活动英语作文

上周学校组织了一次义卖活动英语作文

上周学校组织了一次义卖活动英语作文全文共6篇示例,供读者参考篇1Last Week's Bake Sale at Our SchoolLast week, something really exciting happened at my elementary school - we held our annual bake sale fundraiser! It's one of my favorite events of the whole year. I look forward to it for weeks and weeks beforehand.The bake sale is when all the students, teachers, and families bake lots and lots of delicious treats like cookies, cupcakes, brownies, and more. Then we set up tables in the gym and sell all the baked goods to raise money for our school. It's a super fun day full of sweet smells and even sweeter treats!This year, my mom and I spent hours in the kitchen baking dozens of chocolate chip cookies from scratch. We made the dough the night before and then I got to help scoop the dough onto baking trays and put them in the oven. The hardest part was having to wait for them to bake and cool before we could try any! The whole house smelled like a bakery.When we brought the cookies to school the next morning, I was amazed at all the different kinds of baked goods there were. Tables and tables piled high with cakes, pies, bars, muffins, breads - you name it! I saw cupcakes decorated like little animals, sparkly sugar cookies in fun shapes, gooey chocolate brownies, and even a few special treats like baklava and biscotti that some families make as traditions.Before we could open the doors and start selling, we had to do a couple important things. First, we made sure all the baked goods had labels listing the ingredients in case anyone had food allergies. Safety first! Then we sorted everything by type and priced it all. Most individual items were between 0.50 and 2, but you could get deals if you bought in bulk. A whole pie or cake could cost 10 or 15.Finally it was time for the bake sale to begin! The gym doors opened and instantly there was a huge line that stretched down the hallway. We had advertised the event for weeks, so everyone in the neighborhood knew it was happening. Parents, grandparents, kids - they all came to buy some goodies.For the first couple hours, it was just a whirlwind of activity. We took turns working the cashboxes while other students walked around describing what was in each treat and restockingthe tables as items sold out. It was a little chaotic, but so much fun! I loved seeing all the smiling faces as people walked away with bags and boxes piled high with their sweet purchases.Around lunchtime things started slowing down, but we still had quite a few customers coming through. A bunch of us took a break to sample some of the leftovers. I tried this amazing coconut cake that I'm pretty sure was better than anything I've ever had from a fancy bakery. We giggled and joked around, our fingers all sticky from buttercream frosting and crumbs.By the time we closed up for the day, we had sold almost everything! Just a few sad, lonely baked goods remained on the tables. I was shocked when I heard the final tally - we had raised over 2,500 for our school! That money will go towards lots of important things like new classroom supplies, updated library books, and fun activities throughout the year.As exciting as the bake sale itself was, my favorite part was always the cleanup afterwards. We all grabbed boxes and went around gathering up the remnants, happily munching away. I couldn't believe some of the huge crumbs and chunks of cakes, pies, and cookies that people had left behind. We joked that it would be enough for a whole other bake sale!Once we boxed everything up, we got to distribute it between all the classroom and take home family-sized servings. I brought home an entire shoebox overflowing with baked good debris - chunks of brownie, shards of sugar cookie, bites of cake. My mom just laughed and said she'd never seen me look so happy surrounded by crumbs and frosting smeared across my face.For the next few days, every time I opened my lunchbox there would be a new assortment of mismatched baked good bites from the bake sale. I liked to mix and match the flavors for the ultimate sugar buzz during afternoon recess. I'dpop a brownie chunk in my mouth, then a bit of lemon cake, followed by a chocolate-dipped macaroon. Sugary bliss!The bake sale was a ton of work for sure, but it was so worth it. We had an absolute blast putting it all together. And we raised a mountain of money that will really help make our school year even better. Parents got to show off their amazing baking skills, kids got to taste endless delicious treats, and we all got to work together towards an important goal.I can't wait for next year's bake sale! Maybe I'll even get to bake and decorate a cake or pie myself to contribute. A bake saleis a pretty sweet way to raise funds, if you ask me. I'll be dreaming of frosting and sprinkles for the next 12 months!篇2Last Week's Big School FundraiserWow, last week was so much fun! Our school organized this huge fundraiser event called the "Fall Festival" and it was awesome. I had been looking forward to it for weeks and weeks. All my classmates were super excited too.It all started a month ago when our principal, Mr. Johnson, gathered everyone in the auditorium for an assembly. He told us we were going to have a big fundraiser to raise money for new playground equipment, classroom supplies, and books for the library. The fundraiser would be an all-day event on Saturday with games, food, performances, and even a giant rummage sale!Mr. Johnson asked for volunteers from each grade to help plan and run all the different activities. I really wanted to volunteer but I was too shy to raise my hand in front of the whole school. Luckily, my best friend Jessica wasn't shy at all. She shot her hand up and got picked to be on the planning committee! I was so excited for her.Over the next few weeks, the whole school was a buzz with fundraiser preparations. Parents and teachers were coming in after school to set things up. Flyers and posters about the event were hung up everywhere. Each classroom had a competition to design and decorate the best donation box for collecting items for the rummage sale. My class made ours look like a big monster with its mouth wide open to "eat" all the donations!Finally, the big day arrived - the Fall Festival! I could barely sleep the night before because I was so anxious with excitement. When I got to school early that morning, I could already see tons of people setting up booths and activities all over the grounds. There were game booths, food trucks, a stage for performances, and areas roped off for the rummage sale. It looked like a fair!Jessica came running up to me, she had this special "Staff" t-shirt on since she was on the planning committee. She told me I absolutely had to go check out the rummage sale section. Her team had spent weeks sorting through all the donated items into different sections like clothes, toys, books, furniture and more. There was so much stuff, it looked like a giant yard sale!After checking out the rummage sale, Jessica and I went to go play some games. We played the ring toss, balloon darts, and this really hard one where you had to throw a ping-pong ballinto the small opening of a glass bottle. We didn't win any prizes but we had a blast trying.We got hungry after gaming so we went to get food from the trucks. I got a hot dog loaded with mustard, ketchup, and relish. Jessica got a huge pile of nachos. We snacked while watching the talent show on the main stage. Some older kids did magic tricks, played musical instruments, and there was even an impressive baton twirling routine!My favorite part of the whole day was the big kickball tournament. Basically every kid at school joined in, even a bunch of teachers! The teams were mixed up with kids from all the different grade levels. It was a bit chaotic with so many people playing at once but it was super fun. My team made it all the way to the finals before losing in a dramatically close last inning.As the evening came, I was getting pretty tired from running around in the sun all day. But I'll never forget the final event - a massive teacher vs student dodgeball game! The whole school filed into the gymnasium and divided up into two teams. It was hard to see with all the excitement and dodgeballs flying everywhere. In the end, the students narrowly defeated the teachers in an epic showdown.I left the school that night feeling exhausted but accomplished. My body was sore but my heart was happy. We had all worked so hard to make the Fall Festival a hit and raise lots of money for our school. A few weeks later, Mr. Johnson announced that the fundraiser brought in over 10,000! That money will provide so many amazing resources to make our school an even better place.I'm already looking forward to next year's fundraiser. Maybe I'll finally work up the courage to volunteer for the planning committee myself! No matter what, I know it will be another exciting celebration that brings our whole school community together. Our teachers and families are the best!篇3A Charity Sale at My SchoolLast week was so exciting at my school! We had a huge charity sale to raise money for the animal shelter in our town. It was an idea that came from the student council. They wanted to do something to help out in the community.When they first announced we were going to have a charity sale, I wasn't sure what that meant. My friend Sarah explained it to me. "It's when everyone brings in stuff they don't needanymore from home," she said. "Then we sell it and the money goes to a good cause."I thought that sounded like a great idea. My mom is always telling me and my brother to clean out our closets and toy boxes for things we've outgrown. Now we'd have a good reason to get rid of some of our old toys and books!The student council put up big posters all around the school advertising the charity sale. They had a cool logo with a cat and dog on it for the animal shelter. They asked everyone to bring in gently used toys, books, games, clothes, and other items to donate.My mom helped me go through my room to find things to bring in. We gathered up a big pile of stuffed animals, action figures, picture books, and some toys I don't really play with anymore. We also found some of my old clothes that don't fit me now. It felt good to get that stuff out of my room!When I brought the boxes of stuff to school, I saw huge piles of donations in the gym already. There were stacks of books, bins overflowing with toys and games, and racks of clothes. I was amazed at how much people had brought in!The days leading up to the sale, every recess and lunch period had students volunteering to sort through everything and price it. We had teams for the book section, the toy section, the clothes section, and more. My friend Daniel was in charge of the video game area.I got put on the stuffed animal team with Sarah. We had so many stuffed animals to sort through! Big ones, small ones, dogs, cats, bears, bunnies...you name it. Sarah and I made signs to group them by type and price. We tried to give the really cute ones a higher price so they'd raise more money.Finally the day of the big sale arrived! The gym was completely transformed into a huge store. There were aisles and sections for everything. It looked amazing!When the doors opened at 9am, there was a huge line of people waiting to get in. Teachers, parents, and kids from other classes were running around with empty boxes to put their purchases in.Sarah and I got stationed at the stuffed animal section. We had to keep re-folding the piles and putting things back in order as people dug through them. It was crazy! Within the first hour, we'd sold over half of our stuffed animals.I kept having to go ask a teacher to grab more stock from the back to refill our section. Good thing there were so many donations! Any time a new bin of cute stuffed animals came out, there was a mad dash to grab them.It was so much fun working the sale. I loved seeing all the excitement over the cool things people had donated. Kids were so eager to find treasures in the toys and books. And the parents loved getting clothes and other items for good prices.At lunchtime, the student council stopped for a tally. We had already raised over 1,000! And that was just in the first few hours.I couldn't believe how well we were doing.After lunch, the sale went into total madness mode. Everything was getting discounted to clear it out. You could get an entire trash bag stuffed with toys for just 5. Kids and parents were just shoveling everything into boxes.By the end of the day, we'd completely sold out of everything – except for a few scattered items here and there. When the final tally came in, we had raised 2,638 for the animal shelter! The whole school went crazy cheering. I was so proud of what we'd all accomplished.A couple days later, the student council invited a few representatives from the animal shelter to come to our school. We got to present them with the giant check for all the money we raised.The animal shelter workers were so happy and grateful. They told us the money would go toward giving medical treatments to the rescued animals, as well as buying food, toys and bedding. Hearing how much of a difference our hard work would make felt amazing.Not only did we raise a huge amount of money for a good cause, but we also helped the environment a little. We kept a whole bunch of stuff out of landfills by recycling it to new homes instead of throwing it out. So it was a win-win!I'll never forget the experience of our big charity sale. It showed me how when an entire school community works together for a common goal, we can make such a big positive impact. It makes me excited to do more charity events and fundraisers in the future. I know we can really make the world a little bit better, one small effort at a time.篇4Last Week's Awesome Bake Sale at Our School!Hey guys! I'm so excited to tell you all about the super cool bake sale that happened at our school last week. It was the best day ever and I had a total blast helping out and eating all the yummy treats.It all started a couple weeks ago when our teacher, Mrs. Johnson, told us that the school was going to have a bake sale to raise money for a really good cause. She said the money would go to an organization that builds schools for kids in other countries who don't have awesome schools like we do. I thought that was such a nice idea because every kid should get to go to school and have fun learning just like us.Mrs. Johnson asked if any of our parents would be willing to bake some delicious goodies to sell at the bake sale. My mom is an amazing baker, so she volunteered right away to make her famous triple chocolate brownies and her super moist carrot cake cupcakes. A bunch of other kids' parents said they'd bake stuff too. I was so excited thinking about all the incredible sweets we'd have!The morning of the bake sale, the whole school was buzzing with energy. All the kids were talking about the yummy treats their parents had made and which ones they wanted to buy. My best friend Jayden's mom had made her legendary peanut buttercookies that are the best cookies on planet Earth. I knew I'd have to get my hands on some of those for sure!When we got to school, there were tables all set up in the cafeteria filled with the most mouth-watering baked goodsyou've ever seen. Trays piled high with gooey chocolate chip cookies, frosted cupcakes decorated with sprinkles, fudgy brownies, crispy rice treats, and so much more. It was a sugary wonderland! The wonderful smells of vanilla, chocolate, and baked goodness filled the whole room. My sweet tooth was going crazy!Each grade took turns going to the bake sale during different periods of the day. I was antsy with anticipation waiting for my turn to go buy the treats. I had brought my allowance money to buy as many goodies as I could. Finally, it was our class' turn to head over!I skipped excitedly to the cafeteria, money gripped tightly in my fist. I couldn't decide what to get first, there were so many amazing options. After lots of humming and hawing, I picked out Jayden's mom's peanut butter dream cookies, two fudgy brownies, a pink frosted cupcake with rainbow sprinkles, and a crispy rice treat drizzled with chocolate and peanut butter. Oh man, just thinking about it makes my mouth water!I happily devoured one of the brownies while I was waiting in line to pay. The rich chocolate flavor was insanely good - it was soft and fudgy on the inside and had a nice crispy crust on the top. I licked every last crumb off my fingers. Definitely worth every penny!After paying, I carefully carried my treats back to class, eyeing them lovingly the whole way. During our reading period, I may or may not have snuck a couple bites of that scrumptious peanut butter cookie when my teacher wasn't looking. It was chewy and creamy and peanut buttery perfection.At lunch, I excitedly unwrapped the final two treats - the cupcake and rice treat. The cupcake was overflowing with swirls of creamy pink frosting and topped with a kaleidoscope of colored sprinkles. I tried to lick off some of the frosting before it got all over my face, but I definitely ended up with frosting smeared all over my mouth and nose. Jayden laughed at me, but I didn't even care because it was THAT good.Finally, I devoured the gooey chocolate peanut butter rice treat for dessert. The salty and sweet flavors were an amazing combo. I moaned with every bite because it was just that incredible. Safe to say I was officially in a food coma after all those crazy good treats!All the baked goodies were completely sold out by the end of the day which was awesome! We raised so much money to donate to the school building organization. I had such a fun time at the bake sale and felt really good knowing the money was going to help kids in need. I can't wait until we do it again next year - I'm already dreaming about what delicious things I'll get to eat!篇5Last Week's Bake Sale at Our SchoolLast week, our school organized a super fun bake sale! It was the most exciting event we've had in a long time. I couldn't wait to take part and help out.A few weeks before, our teacher, Mrs. Wilson, announced that we were going to have a bake sale to raise money for a local animal shelter. She told us that the animal shelter took in stray dogs and cats, gave them food, shelter, and medical care, and tried to find them loving homes. I felt really bad for those poor animals that didn't have families to take care of them.Mrs. Wilson said that we needed to bake delicious treats at home with our parents and bring them to school on the day of the bake sale. She gave us a list of ideas like cookies, cupcakes,brownies, and other yummy things. My favorite is chocolate chip cookies, so I knew right away what I wanted to make.On the night before the bake sale, my mom and I baked a huge batch of chocolate chip cookies together. We made the dough from scratch and I got to help mix all the ingredients. Then we scooped spoonfuls of dough onto baking sheets and put them in the oven. The whole house smelled amazing! Once the cookies cooled off, we packed them up nicely in boxes and bags to take to school.The next morning, I was so excited. I carefully carried the boxes of cookies into school, being very careful not to drop or squish any of them. When I got to our classroom, I could see that many of my classmates had also brought baked goods from home. There were trays and plates filled with all kinds of treats - muffins, rice crispy squares, fudge, pies, and more.We set everything up on tables in the hallway outside our classroom. It looked like a real bakery! We made signs and posters to advertise the bake sale too. I helped make a big poster that said "Bake Sale Today! All proceeds go to the Sunny Meadows Animal Shelter."Finally, it was time for the bake sale to begin. Kids from other classes started coming over with their parents to buy the treats.We took turns working at the tables, taking money, and bagging up the goodies. I got to be a cashier for a little while, which was fun. A lot of people bought my chocolate chip cookies and said they looked delicious.Over the next few hours, kids and parents came streaming in to get baked goods. We were so busy that we actually ran out of some items pretty quickly and had to restock with whatever extras we had. It was chaos, but in a really exciting way! I've never seen so many people at our school at once.By the end of the day, we had sold almost everything. Just a few stale muffins and a couple cookies were left over. Mrs. Wilson counted up all the money and announced that we had raised over 800 for the animal shelter! We all cheered loudly. I was amazed that some bake sale could raise that much money.A couple days later, Mrs. Wilson got the whole class together again. She said that the money we raised would help feed and take care of dozens of homeless cats and dogs for a long time. A few people from the animal shelter even came to pick up the money and thank us in person. Seeing their smiles and how grateful they were made me feel really proud and happy inside.The bake sale was definitely a lot of work between all the baking, setting up, selling, and cleaning up afterwards. But it wasalso a ton of fun getting to work together with my classmates towards an important goal. And knowing that we were helping so many animals in need made all the hard work worth it. I really hope our school does another bake sale again soon!篇6A Charity Sale at Our SchoolLast week, our school organized a really exciting charity sale! It was a big event that all the students and teachers had been preparing for weeks. Everyone was buzzing with excitement as the day approached.On Monday morning, our principal Mrs. Taylor made an announcement over the loudspeaker about the upcoming sale. She explained that all the money raised would go to help build a new school for children in a poor village far away. She said it was our chance to help other kids just like us who don't have good schools or enough supplies. I thought that was a really nice idea.My class spent the next few days making lots of crafts, treats, and other items to sell at the charity sale. We made colorful friendship bracelets by braiding embroidery thread. We baked dozens of chocolate chip, sugar, and peanut butter cookies. We even painted ceramic pots and planted little flower seedlings inthem. My best friend Anna is a great artist, so she made some beautiful watercolor paintings to sell too.Finally, it was Friday - the day of the big sale! There was so much excitement in the halls as all the students rushed to set up our classroom booths in the gym. We covered the tables with bright cloths and arranged all of our items beautifully. I helped my teacher Mr. Martin hang up signs advertising our crafts and treats.When the doors opened at 3pm, there was a huge line of parents, grandparents, and family members waiting to come in. The gym was soon packed with people browsing the different booths. The air smelled like sweet baked goods and crafty things like paint and glue.Anna and I took turns selling our friendship bracelets. We had made ones in every color pattern you could imagine - rainbow, zig-zag, striped, and more. An older girl named Leyla from another class was selling the most incredible hand-sewn tote bags. They were so well-made and had pretty embroidered designs. I bought one to use as my new school bag.The bake sale was definitely the most popular booth. There were so many delicious treats - cupcakes, brownies, rice krispie squares, fudge, you name it! The line was out the door. My familybought a container of my class's chocolate chip cookies, which my dad said were the best he'd ever tasted. I felt really proud.Over by the art booth, there were incredible paintings, drawings, and hand-made jewelry for sale. I browsed the ceramic pots and ended up buying one painted with a cute little ladybug design for my mom. She loves ladybugs.As the sale went on, the gym started to empty out. Lots of people had bought armloads of stuff to support the cause. When it was finally over, we had to quickly clean up and pack away all the leftover items. I was exhausted but felt so happy seeing how much money we had raised by working together.In the end, our charity sale brought in over 5000! Can you believe that? 5000 just from some crafts, treats, and generous people. Mrs. Taylor announced it over the loudspeaker the following Monday and everyone cheered so loudly. She said the money would be sent to build ten big new classroom buildings and provide books, desks, and supplies for the village school.I'm so glad our school did this charity sale. It feels amazing to know that we could all come together as a community and raise that much money to help other kids our age get a good education. A few friendship bracelets, cookies, and potted plants might seem small, but together they added up to give hundredsof students a chance at brighter futures. It makes me want to keep finding ways to lend a hand, even if it's just through little acts. Who knows how much of a difference we can make?。

关于给贫困地区孩子捐学习用品的英语作文

关于给贫困地区孩子捐学习用品的英语作文

关于给贫困地区孩子捐学习用品的英语作文Helping Kids Like Me LearnHi there! My name is Jamie and I'm a 4th grader at Oakwood Elementary School. My favorite subjects are science and art, and I love learning new things every day. But not every kid is as lucky as me to have all the school supplies they need to do their best in class.A few weeks ago, my teacher Mrs. Park told us that we were going to do a special project to help other kids our age who don't have things like pencils, notebooks, rulers and other basic supplies for school. She said there are lots of children living in poor neighborhoods and countries who can't afford these simple but important learning tools.I couldn't believe it at first. How could there be kids who don't have a single pencil to use? No crayons for art class? No notebook to write their ideas in? I felt really sad thinking about that. Learning is hard enough as it is without having to worry about not having the most basic supplies.Mrs. Park showed us some pictures of kids in these situations - they looked just like me and my classmates, but they were sitting at broken desks or just on the floor trying to learn. Somehad to share one tiny pencil between a few students. Others didn't have any books at all and just had to listen to the teacher and try to memorize everything. It looked incredibly difficult and unfair.That's when Mrs. Park told us about an organization called School Supplies for All that works to get basic learning materials to students in need, wherever they are in the world. They collect donations of supplies from more prosperous communities and schools, and then distribute them through charities and volunteers to the kids who desperately need them.As soon as I heard that, I knew I wanted to help out. My parents have always taught me how important it is to be grateful for what I have, because there are so many people out there with little or nothing. Now I could do something to share what I'm lucky enough to have - even just a few extra pencils or notebooks - with other kids who aren't as fortunate.Our whole class got really excited about the prospect of running our own school supply drive for School Supplies for All. We made bright posters and flyers advertising it and hung them all over the school hallways. A bunch of us spoke about it at an assembly too, explaining why it was important and how other students could get involved.Then for the next two weeks, every single student and teacher brought in any extra, gently-used or new school supplies they could find at home or were willing to purchase. Pencils, pens, erasers, rulers, notebooks, binders, crayons, colored pencils, markers, pencil cases - you name it! We had donation boxes set up in the front lobby, and by the end they were totally overflowing with supplies.On the last day of the drive, we got to go through all the donated items and bundle them up into packaging to get sent off to School Supplies for All. It felt amazing to be a part of something so meaningful that would make such a difference for other kids in difficult circumstances.As we were sorting pencils into bunches of 8 and tying them together with elastics bands, I imagined how excited a student would be to receive that simple bundle. Something I take for granted every day would feel like a gift to them. All those notebooks we stacked into boxes were like gold that could open up new opportunities for learning and self-expression.When all was said and done, we had gathered over 5,000 separate school supply items to donate! I couldn't believe we had accomplished so much just from our little school. Mrs. Parksaid she was proud of us for working hard and thinking of others before ourselves.A few weeks later, we received a video from one of the schools that got our supply shipment. It was a classroom of children around my age, but they looked very different from my classmates and I. Some didn't have shoes and wore tattered clothes. The building they learned in was old and cracked.But they were all smiling bigger than I've ever seen and waving these notebooks and pencils we sent in pure joy. Their teacher stood in the background with happy tears in her eyes as her students began writing with their new utensils. You could see how much something so small that we take for granted meant to those kids and their ability to learn.Watching their heartwarming reaction is something I'll never forget. Out of everything I've learned so far in school, that experience taught me one of the biggest lessons about how there are so many people out there without access to the simplest of tools and opportunities that have been afforded to me.From just the leftover supplies in my house and from my neighbors, classmates and teachers, we were able to make a real difference and positive impact on those students' lives in such ameaningful way. I know those pencils, pens and notebooks we donated will help them work towards a brighter future.I feel so fortunate to be able to get a good education with the supplies I need. But now I also feel a responsibility to keep looking for ways to share that opportunity with others, even in small ways like a pencil donation drive. Because every kid deserves the tools to learn, create, express themselves and reach their full potential.I'm proud that our school could come together on this project, and I hope it inspires others to do the same. Whether it's an extra pencil or a whole boxful, every little bit of supplies can contribute to helping another student succeed. I may be just a fourth grader, but I've learned that I have the power to change lives and spread more education around the world just by caring about others. And I can't wait to do more projects like this!。

分发的相关英语短语

分发的相关英语短语

分发的相关英语短语劳拉正在分发她从家里相册中挑选出的相片。

下面是店铺给大家整理的分发的相关英语短语,供大家参阅!分发的相关英语短语篇1One is if you have to coordinate how you're going to give this vaccine to two million children across the U.S.首先必须协调合作,如何才能将疫苗,分发给全美国二百万孩子And kind of student groups gather there to like, hand out flyers and stuffs.有一些学生组织聚在这里,分发传单之类的。

The earnings, you understand, are kind of a theoretical concept but dividend is the money that we send out.你们都知道,收益是个理论概念,但股利是我们分发出去的钱Pretty quickly,though,different churches, probably Paul's churches,initially, started sending around copies of Paul's letters.很快,不同的教会,最先可能是保罗的教会,开始分发保罗书信的副本。

You have to test it by giving the vaccine to a large population of people, and then watching and seeing if you've reduced the incidence of the disease.这样的测试的做法只能是,给大量人群分发疫苗,接分发观察和了解,这种疾病的发病率是否有所降低that can be distributed to people in maybe Third World countries or然后分发给第三世界国家的人,You try to design actually I'm going to come back to that in a second. It's like you're trying to use a hash function that spread things out pretty evenly. But the places you store into in those lists may have to themselves have a small list in there, and whenyou go to check something, you may have to do a linear search through the elements in that list.你尝试分发去设计,实际上过会儿我会回头讲解这个问题,类似于你需要用一个哈希函数,非常平均的将物体分发出去,但是在列表中你数据,映射到的地方可能会有自己的一小段列表,当你回头查找数据的时候,你可能需要在那一小段列表中做线性查找。

英语俱乐部计划向成员发出倡议书的英语作文

英语俱乐部计划向成员发出倡议书的英语作文

英语俱乐部计划向成员发出倡议书的英语作文全文共3篇示例,供读者参考篇1An Important Letter to All English Club MembersDear friends,I am writing to you today about something very important. As members of the English Club, we all love learning and speaking English. But I think there is so much more we could be doing to really become amazing at English and have a huge impact on our school and community.First off, I want to say how lucky we are to have this club. Speaking a second language like English opens up so many opportunities in life. We can make friends from all over the world, read books and watch movies from other countries, and even get better jobs when we're older because lots of companies want people who can speak multiple languages. My older cousin is studying business in university and she says knowing English gives her a huge advantage.But learning a new language is hard work. It takes constant practice and dedication. That's why just meeting once a week atour English Club isn't enough if we really want to master English. We need to go above and beyond.I was thinking about some of my favorite books, movies and TV shows in English. Characters like Harry Potter, The Avengers, and the kids from Stranger Things seem so cool and confident when speaking English. I want to be just like them - sounding natural and not getting stuck when trying to say what I want to say. Wouldn't it be amazing if we could all speak English that well?That's why I have some big ideas to take our English skills to the next level. But it's going to require each of us to step up our commitment. Here's what I think we should do:Start an English podcast or YouTube channelWe could take turns recording ourselves speaking in English about different topics like our favorite books, movies, video games, sports, etc. This would give us cool experience with technology and media, while constantly practicing our speaking skills out loud. We could edit the audio/video, add music, and make it really professional. Maybe it could even become popular and people from all over could learn from us!Do an English play or musicalLots of practice goes into memorizing lines and songs for a play or musical, all in English. We could pick an awesome story to perform like Harry Potter, Frozen, The Lion King or something else. It would be so much fun singing and acting in front of an audience, feeling like the characters using such natural English. Our parents would be amazed at how good our English sounds!English book club & movie nightsWe should pick some awesome books, novels and movies to read and watch together. Then we could meet up and have discussions/debates/interpretations all in English. It would be a great way to expand our vocabulary and conversational skills about literature, storytelling and analyzing deeper meanings and perspectives.English tutoringA couple times a month, we should go to the local elementary schools and volunteer as English tutors for the younger kids who are just starting to learn the basics of the language. It would be an incredible experience getting practice teaching others and being role models. Plus those kids would look up to us as English experts and motivate us to keep leveling up our skills!Field tripsEvery few months we should plan an English immersion day. We could go somewhere like a museum, play, festival or other event and spend the whole day speaking only in English to each other no matter what. Or maybe we could take a trip to an English cafe, restaurant or bookstore and be surrounded by English atmosphere. It would feel like being transported to another country!Those are just some of the ideas I had, but I'm sure everyone else has great suggestions too. The key thing is that we need to go way beyond just our normal English Club meetings to truly become English masters. It will be hard work, but also incredibly fun and rewarding.I can picture it now - all of us sounding like we're in a Hollywood movie, speaking English so naturally and coolly. We'd be utterly bilingual, able to make friends from the U.S., U.K., Australia or anywhere else just as easily as we can in our own country and language. Imagine reading Harry Potter or watching an Marvel movie and understanding every single word instantly without even thinking about it. What an amazing skill to have!English can unlock so many possibilities for us - communicating with people globally, learning about diversecultures, getting better jobs and opportunities, and expanding our minds. But it does require hard work, passion and going the extra mile. That could be through extracurricular activities like those I mentioned or just studying harder, watching more English TV, listening to music and audio books, or whatever inspires us.I really believe that if we dedicate ourselves, we could be the best English speakers in the whole country for our age group. We'd make our families and teachers so proud! More importantly, we'd develop extremely valuable skills to achieve our biggest ambitions in life.So what do you all think? I'm absolutely committed to becoming an English master, no matter how hard I have to work. Who is with me?! Let's use our English Club to do something incredible. Let's dream big and take our English abilities to the level of fluency and excellence. We can combine fun and learning in a way that really transforms us. It won't be easy, but anything truly amazing in life requires hard work and dedication.I can't wait to hear your thoughts and ideas. Please let me know if you're as fired up about this as I am! If enough of us commit, there's no limit to what we can achieve.Thanks for reading this long letter. I'll stop writing now so we can start doing instead of just thinking and talking. Let's get out there and become English experts through action!Your friend,[Your name]篇2Dear English Club Members,Hi everyone! It's me, Jenny, the club president. I'm writing this letter to all of you because I have a really exciting idea that I want to share. Are you ready? Here it goes!I think we should start a big project to help improve our English skills even more. I know we already do lots of fun activities like reading stories, playing games, and practicing conversations. But I was thinking we could take it to the next level and do something really special.My idea is that we create our very own English magazine! How cool would that be? We could write all the articles ourselves, in English of course. We could have sections for creative writing like short stories or poems. Maybe some book or movie reviewstoo. And we could create puzzles, comics, or even have an advice column. The possibilities are endless!By working together on this magazine, we'll be using our English in such an engaged and purposeful way. We'll get practice with writing, editing, layout and design, teamwork, and so much more. Just imagine how proud we would feel to see our own English creations in an actual published magazine that we made ourselves. I get excited just thinking about it!Here's what I'm picturing - every month we could have a different theme for the magazine's main topic. One month it could be about different cultures around the world. Another month could focus on environmental issues. We could do one about careers and future goals. Or have an entire magazine issue dedicated to our favorite books and characters. The themes we choose will make the magazine fun, interesting, and educational all at the same time.Of course, this would be a big project to take on. We would need everyone's cooperation and hard work to make it a success. We'd have to split into teams to handle the different jobs like writing, editing, layout, art/graphics, etc. And we'd need good leaders for each team to help keep everything organized and on track.But I really think if we all work together, we can create something amazing! Just picture holding that first issue of our English magazine in your hands. All our creativity, communication, and English skills combined into one impressive publication. We can make it happen!I already checked with Mrs. Thompson, our club advisor, and she loves this idea. She said as long as we stay on task and do quality work, she will help make copies of the magazine to distribute at school once it's complete. She also gave me some tips on how to assign roles, set deadlines, and make sure everyone participates equally. With her guidance and all of our teamwork, I'm confident we have what it takes.So what do you say? Are you ready to take our English skills to new heights by creating our very own magazine together? If you're interested, please let me know at our next meeting, and we can start putting a plan into action. I already have some ideas drafted about potential teams, themes for our first few issues, and how we can make this a really incredible experience.Just imagine how impressed our families will be when they see the amazing English work we're capable of! And it will look so great on our records too - colleges and future employers will see what a creative, hard-working, entrepreneurial group we are.Most importantly though, this will be a fun way for all of us to celebrate our passion for English together. We can become published writers and editors while improving our English abilities at the same time. What could be better?I truly believe that by taking on this challenge as a team, we can create something very special that we'll always remember. So let's go for it - full speed ahead towards publishing our very own English magazine! Thanks for reading my proposal, and I can't wait to hear what you think.Your English Club President,Jenny篇3A Call to Action for the English Club!Hey friends! This is an important message for all my fellow members of the Super Cool English Club. I'm writing to you today because I really care about our club and I want to make sure it keeps being awesome. But I've noticed some things that are kind of worrying me, and I think we need to take action before they become big problems.First off, I've seen that attendance at our weekly meetings has been dropping lately. When we started the club last year, we had over 20 members showing up to practice English together through games, activities, and conversations. But this semester, there have been some meetings where only 8 or 9 people came. I get that we all have other commitments like homework, sports, music lessons, and family obligations. Believe me, I'm just as busy as anyone! But our English Club should be a top priority.Why? Because improving our English is going to help us so much in life. Being bilingual opens up lots of doors and opportunities that wouldn't be available if we only spoke one language. We'll have a huge advantage over our classmates who can't communicate well in English. When we get older, knowing English fluently will allow us to get better jobs, make more money, travel anywhere in the world, make friends from other countries, and so much more. This is the skill that can truly change our lives in amazing ways, but only if we work hard at it.The other thing I've noticed is that some members aren't really participating fully when they do attend the meetings. A few people just sit in the corner on their phones not paying attention. Others refuse to speak any English, even when the activity requires it. Maybe they're feeling shy or self-conscious, but thoseare obstacles we all need to overcome. The only way to improve our English is to practice speaking it as much as possible. Yeah, it can be a little scary or embarrassing at first, but we're all in this together. Nobody's gonna judge or make fun of anyone for messing up sometimes. We're here to help each other get better. The more we use English, even if we make mistakes at first, the more natural and comfortable it will become.Another issue is that some of the activities and games we've been doing lately are kind of boring. A few people have mentioned that to me, so I know I'm not the only one who feels that way. We started off with so many fun, interactive ways to learn new vocabulary and practice conversations. But lately it's been more just reading, writing, and grammar exercises. Sure, those are important too, but we shouldn't forget the stuff that gets us excited to speak English! We're kids – learning should be enjoyable, not feel like a chore.I've also heard grumbling from some members about the snacks situation. For the first few months, we had an awesome spread of treats to share – cookies, chips, candy, sodas. It was like a little party every time we met up. But then for some reason, the snacks just stopped coming. I'm not saying we NEED junk food to have a good meeting, but it definitely helped make it morefun. And it gave us chances to practice ordering food, asking for things politely in English, expressing likes and dislikes, etc. The snacks brought an element of real-world scenarios that we could try out.So those are some of the main concerns I've been noticing with our club lately: lower attendance, lack ofparticipation/engagement, boring activities, and no more snacks. But I have a plan to fix ALL of those problems and take our English Club to new heights! Here's what I think we should do:Refreshments Responsibility - We can form a "Snacks Squad" that is in charge of bringing treats and drinks for each meeting. We'll take turns so that nobody has to provide everything all the time. That way we can incorporate thefood/drink element again in a sustainable way.Activity Makeover - Let's get creative and brainstorm a bunch of new, exciting games and interactive activities to do during the meetings. We can even open it up for suggestions from all members. There are so many fun ways to learn English that don't feel like work at all.Participation Points - Why don't we start some kind of points/rewards system where people get points for активный участие? Whether it's speaking English exclusively during anactivity, leading a conversation, introducing new vocabulary words, or whatever, we can track points and maybe reward the highest scorer each month with a little prize.Accountability Partners - We could go around and pair up members to be "accountability partners." Each partner would be responsible for making sure the other person attends every meeting, engages fully, and puts in proper effort. We'll all push and motivate each other that way.Membership Review - Unfortunately, some of our club members have not been taking it very seriously, despite numerous chances. If things don't improve after enacting these other ideas, we may need to look at revoking membership for those few individuals who simply aren't participating at all. This club should be for committed students only.Those are my thoughts and suggestions, but I'm really interested to hear what YOU all think too. We should have an open discussion about any other ideas for improving and revitalizing our English Club. Then we can put together an action plan and timeline for making it all happen.I'll admit, part of my motivation for wanting to make these changes is because I'm hoping to be elected as president of the English Club next year. But even more than that, I care so deeplyabout this club, this language, and all of you. English is a key that can unlock a huge world of opportunities for us. We're so fortunate to have this club where we can learn it together in a fun, supportive environment. Let's not take that for granted.I really think that if we make some adjustments based on these suggestions, we can reinvigorate our meetings and get that early energy and enthusiasm back. We'll have more members attending, higher participation rates, awesome interactive activities, yummy snacks, and most importantly – we'll be improving our English skills like never before. We've got this, guys! Our future is in our hands. So let's take action, reignite our passion, and make this English Club something we can be super proud of!Who's with me?! Let me know your thoughts. I'm excited to make this club great again, but I need your help too. Together we've got this!Your friend,[Your name]。

英语近义词

英语近义词

dim – faint – vague 模糊的,暗淡的adequate – enough – plenty of - sufficient 充足的adequate – competent – qualified 胜任的mostly – mainly – for the most part 主要地decide – determine –make up one’s mind决定, 下决心result – consequence – effect -- outcome 结果effect – realize 实现realize -- know – be aware of – be conscious of 意识到think – guess – believe 认为remember – memorize 记住reason – cause -- motive (B级)原因cause – bring about 造成obtain – get – gain 得到certain – some 某一个的certain – sure – positive – doubtless 确定的employ -- hire 雇佣employ – use 使用, 利用scare – frighten 使害怕quickly – fast 很快地at stake -- in danger 处于危险之中out of question – doubtless 毫无疑问的out of the question – impossible – unlikely 不可能的call for – ask – require – request -- demand – insist on要求call off – cancel 取消call sb. up – telephone sb. 给某人打电话get up – arise 起床raise – increase 增加arrive at – reach – get to 到达immediately – right away – at once 立刻look for – seek for 寻找look after – take care of – care for 照顾look forward to – expect 盼望, 期待look up to – respect 尊敬lose – miss 丢失offer – give 给与discuss – debate – talk over 讨论discussion – debate讨论sympathize – feel sorry 感到同情reject – refuse – decline – turn down 拒绝though – although 尽管beautiful – pretty – attractive – lovely -- handsome 美丽的famous – noted –distinguished – celebrated 著名的complete – finish – accomplish -- fulfill 完成dark – black 黑色的darken – blacken 使变黑adequate – enough–sufficient 充足的mild – gentle 温柔的,温和的strange – odd 奇怪的surprised – astonished – shocked 感到吃惊的surprising – astonishing – shocking 令人吃惊的proper – appropriate 适当的suitable – fit 适合的fit – healthy 健康的finally – at last – in the end – eventually – ultimately (A 级) 最终的put off – postpone – delay 推迟end – finish – stop –cease -- come to an end—terminated (A 级)停止participate in – take part in – join in – be involved in 参加now and then -- occasionally 偶尔constantly – continuously – endlessly 不断地criticize -- blame 批评grasp – catch hold of 抓住follow – understand -- grasp 理解take …into consideration –take …into account把…考虑在内recently – lately 最近tolerate – bear – stand – put up with – endure 忍受abandon – give up 放弃rescue – save 拯救convert – change 转变,兑换change – alter – vary 改变,变化increase – add to – enhance 增加remedy – cure – treat 治疗practically – almost 几乎accidentally – by chance – by accident 偶然sometimes – from time to time – at times 有时ready – prepared 有准备的get ready for – get prepared for 为…做好准备ready – willing 乐意的rarely – hardly – seldom 很少,几乎不usually – normally 通常地normal – common – usual – average 通常的protect – preserve 保护slight – a little 轻微的harmful – damaging -- bad 有害的harm – damage 损害hurt – injure 伤害shine – polish 擦亮deadly – killing – fatal 致命的affect – influence – impact 影响fair – just 公正的extract – take out 拔出repair – fix 修理physician – doctor 医生depend on – rely on – be dependent on 依靠particularly – especially 尤其,特别obvious – evident – clear – distinct 明显的safe – secure 安全的ensure – make sure – make certain 确保pretty – very – rather – fairly 相当地distant – remote 遥远的important – essential – crucial 重要的branch – division 部门company – firm – concern – corporation – enterprise 公司behavior – conduct 行为steady – stable 稳定的spare time – free time 空闲时间speed up – step up – pick up 加速reduce – cut down on 减少delighted – joyful – happy—glad -- pleased 高兴的accumulate – gather – collect 积聚,积累speed – rate 速度assign – distribute 分配assignment – task 任务order – direct 命令foolish – stupid -- dull 愚蠢的empty – vacant – bare 空的regardless of – despite – in spite of不管,不顾unique – particular 独特的as a result – in consequence 结果on purpose – intentionally 故意地pressing – urgent 紧迫的problem – issue 问题view – opinion – viewpoint – standpoint – point of view – notion – idea 观点, 见解notion – concept – idea 概念characteristic – feature 特征be characteristic of – be typical of 是….所特有的difficult – hard – tough 困难的area – field 领域area – region 区域final –last 最后的diploma – certificate 证书pleasing – satisfactory 令人满意的wish – hope 希望massive – extensive – a mass of -- plentiful大量的conference – meeting会议close – intimate -- near亲密的link – connect 连接explore – investigate 调查propose – suggest – advise -- recommend 建议cater for – meet – satisfy 满足provide – supply – furnish 提供unite – combine – join 联合,合并come across – run into – meet 遇到appealing – attractive --fascinating 吸引人的appeal to -- tempt – attract – fascinate (A 级) 吸引instruct – teach 教授(…课程)private – personal 私人的vanish – disappear 消失phase – stage 阶段pattern – mode 模式,式样destroy – ruin 毁灭facilitate (A 级)– help – assist 有助于manufacture – make – produce – turn out 制造,生产prior to – before 在…之前for good – forever 永远be anxious to do …---- be eager to do…--- be keen to ….渴望…write down – put down 写下try – attempt 努力annoying – irritating 讨厌的,令人生气的boring – dull -- uninteresting令人厌烦的seem – appear 看起来contented – satisfactory – satisfied 满意的exhibit – show 展示show – indicate 表明职称英语培训hate – dislike – be tired of – be sick of 讨厌,不喜欢terrible -- awful 可怕的precise – accurate – exact 精确的concise – brief -- short 简明的elementary – basic – primary – fundamental 基本的purchase – buy 购买deal with – cope with – handle 应付,处理forbid -- ban 禁止lawful – legal 合法的unbelievable – incredible 难以置信的diligent – hardworking 勤劳的,刻苦的principal –chief -- leading--- main 主要的,首要的employ – hire 雇佣fire – dismiss – send away解雇assume – suppose 假定on the verge of --- close to 接近于, 濒临于gaze at – look at – stare at 凝视,注视entitled – qualified 有资格的employment – work – job 工作encourage – inspire – push 鼓励,激励no longer – no more 不再admit – acknowledge 承认allow – permit 允许state – declare – announce 宣布,声明regret – sorry 遗憾的remove – get off 脱下start – begin 开始www.zobserve -- stick to 遵守previous – former 以前的maintain – hold – think 认为cause – bring about – lead to – result in 导致error – mistake 错误component – ingredient – element 成分solve – settle 解决(问题)involve – include 包括numerous – a number of – a lot of – abundant (B 级) – plentiful 大量的, 丰富的stay –remain 保持(用作半系动词)rest – break 休息account for – explain 解释examination – test 测试,考试examine – check up 检查,核对gain – put on 增加put up – lift – raise 举起put up – build – construct 建造relieve -- lessen 减轻,减少evere –serious -- bad 严重的severe – strict 严厉的sharp– acute – severe 剧烈的(疼痛)severe – hard - tough艰苦的quit – give up – abandon放弃subject – topic 话题remarkable – exceptional – extraordinary – great – marvelous – striking – special – unusual显著的polite – respectful 有礼貌的politeness – good manners 礼貌crazy – mad 疯狂的sensible –wise 明智的clever – intelligent – wise – bright 聪明的(be) exhausted –(be) tired –(be) worn out 疲惫believable – convincing -- credible 可信的original – initial 最初的original – creative 创造性的competent – capable – able 有能力的。

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ISSN1925-251X[Print] Progress in Applied Mathematics ISSN1925-2528[Online] Vol.5,No.2,2013,pp.[6–10] DOI:10.3968/ Elementary Discussion of the Distribution ofPrime NumbersLIU Dan[a],*[a]Department of Mathematics,Neijiang Normal University,Neijiang,Sichuan,Chi-na.*Corresponding author.Address:Department of Mathematics,Neijiang Normal University,Neijiang641003, China;E-Mail:zxc576672568@Received:August24,2012/Accepted:November8,2012/Published:April30, 2013Abstract:Propose The interval number distributed theorem.And Proofthat the interval number distributed theorem.Then get the fundamental the-orem of prime number distribution.This proved a new theorem of primenumber.Given the detailed empirical calculation.Key words:Prime number;Density;TheoremLiu,D.(2013).Elementary Discussion of the Distribution of Prime Numbers.Progressin Applied Mathematics,5(2),6–10.Available from /index.php/ pam/article/view/j.pam.1925252820130502.1894DOI:10.3968/j.pam.1925252820130502. 18941.INTRODUCTIONIn1849,in the letter to Encke the German mathematician Gauss wrote that,he found a large x by examining the number of prime numbers in the period of1000 adjacent integers from1792to1793,primes average distribution density should be as follows[1–3]1ln x,(1) which points[1–3,5,6]:Li(x)=x21du,(2)Liu,D./Progress in Applied Mathematics,5(2),2013 The following equation can be obtained from(2):Li(x)=xln x+xln2x+2!xln3x+······+(k−1)!xln k x,k≤ln x,(3)Here(3)has different forms.Mathematicians have proven[4]π(x)∼Li(x),(x→∞).(4) Equation(4)is called the prime number theorem.π(x)means the number of prime numbers less than x.In this paper,the interval prime number theorem is proposed and proved in order to prove the prime number theorem.Thus a new prime number theorem is proved.2.THE REGIONAL DISTRIBUTION OF PRIME NUMBER-S THEOREMSet a large number x,the prime number p,the number of prime numbers is π(x,x/λ),by ignoring the remainder,table as an integer,get[7](p.112)[8](p.538):π(x,x/λ)=s(x,x/λ),s(x,x/λ)=x(λ−1)x/λ≤p≤x 1,(5)Equation(5)is called regional distribution of prime numbers theorem.For example:Let x=100000000,λ=1.000048,from(5)we can getπ(x,x/λ)=259+0.00028,Ignore0.00028,the integer is259,soπ(x,x/λ)=259.3.PROOF REGIONAL DISTRIBUTION OF PRIME NUM-BERS THEOREMProof.Set a large number x,there is only one prime number p from x to the interval x/λ,label the integer by ignoring the remainder.apparently:x−x/λp lnλ=1,For example:Let x=108,λ=1.018,x/λ=106.09037328,p=107.Calculate:1+0.0003957,Ignore0.0003957,the integer is1.Generally speaking,get a prime number p from x to the interval x/λ,ignore the remainder,table as an integer,get:x−x/λπ(x,x/λ)lnλx/λ p x1p=1,(6)Elementary Discussion of the Distribution of Prime Numbers For example:Let x=100000000,λ=1.000048,by(6)Calculate:1+0.0000010810530266,Ignore0.0000010810530266,the integer is1.By(6),the following can be obtained:π(x,x/λ)=x(λ−1)λlnλx/λ p x1p,Then(5)isproved.4.THE DISTRIBUTION OF PRIME NUMBERS FUNDA-MENTAL THEOREMSet prime numberπ(x,x1/2)in the range from x to x1/2π(x,x1/2)=a/2n=1π(xλ1−n,xλ−n),So that:π(x)=π(x,x1/2)+π(x1/2)=a/2n=1π(xλ1−n,xλ−n)+π(x1/2),(7)By setting the real numbers from(5),we can get:π(x)=s(x,x1/2)+π(x1/2),(8)s(x,x1/2)=x(λ−1)lnλa/2n=11λnxλ−n≤p≤xλ1−n1p,a=[x1/2],λ=x1/a,Equation(8)is called the distribution of prime numbers Fundamental Theorem. For example:Let x=256,a=2561/2=16,λ=2561/16=1.41421356,by(8):x(λ−1)lnλ=305.9629,8 n=11λnxλ−n p xλ1−n1p=1λx/λ p x1p+1λ2x/λ2 p x/λ1p+······+1λ8x/λ8 p x/λ71p=0.0389781+0.0354226+0.0230385+0.0196627+0.0129908+0.0093341+0.0097421+0.0069659 =0.1561Liu,D./Progress in Applied Mathematics,5(2),2013 So that s(256,16)+π(16)=305.9629·0.1561+6=54−0.23919131.Ignore0.23919131,the integer is54,the actualπ(256)=54.Set a large number x,a=x1/2,λ=x1/a,by(8):xπ(x)s(x,x1/2)+π(x1/2)108,5761455,5761455,109,50847534,50847534,1010,455052511,455052511,1011,4118054813,4118054813,1012,37607912018,37607912018,1013,346065536839,346065536839,1014,3204941750802,3204941750802,1015,29844570422669,29844570422669,1016,279238341033925,279238341033925.5.THE FUNDAMENTAL THEOREM OF TRANSFORMA-TION OF PRIMEFrom Equation(8),we can get:π(x)+π(x)−s(x1/2)>s(x)−s(x1/2)+π(x1/2),(9) so2π(x)>s(x),2π(x1/2)>s(x1/2),(10) From(8),we haves(x)−s(x1/2)<π(x)<s(x)−s(x1/2)+2π(x1/2),(11) Combining(10)and(11),we can easily gets(x)−2π(x1/2)<π(x)<s(x)+2π(x1/2),(12) and Equation(12)proves the prime number theorem.6.MERTENS THEOREMIn1874,mathematician Mertens had proven[5](p.11)[6](p.8)p x 1=ln ln x+A1+O1,(13)where A1is constant.And Equation(13)is called Mertens Theorem.Set ln x→∞,from(13)we can getp≤x 1p=ln ln x+A1,(14)thenxλ−n≤p xλ1−n 1p=ln ln(xλ1−n)−ln ln(xλ−n)=lnλln x−n lnλ,(15)Elementary Discussion of the Distribution of Prime NumbersBy using Equation(15),the following can be obtained from Equation(8):s(x)=x(λ−1)an=1λ−nln x−n lnλ,a=[ln x−1/2lnλ],λ=x2/x,(16)In the integral sense(16)and(2)are the same,so:Li(x)=s(x),(17) For example:Let x=100000000,λ=1.0000003684136828,a=48642829,thenBy(16),Calculate:s(100000000)=5762209,By(3),Calculate:Li(100000000)=5762209.7.PROVED A PRIME NUMBER THEOREMBy(12)and(17),we can getLi(x)−2π(x1/2)<π(x)<Li(x)+2π(x1/2),(x→∞).π(x)=Li(x)+o(x1/2),(x→∞).(18)This Equation(18)is a new prime number theorem.8.DISCUSSIONFrom the course of distribution of primes,ever is not found withπ(x)strictly equal theorem.Even withπ(x)strictly equivalent to the conjecture has not.To discover and prove aπ(x)equivalent theorem is not easy.It can be said that this is a new way of prime number distribution.Along this way,not only many complicated problems such as the distribution of prime numbers,the Jie Bov conjecture,the Riemann conjecture has to improve,but also opens a widefield of number theory.REFERENCES[1]Manin,Yu.I.,et al.(2006).Introduction to modern number theory.Beijing:Science Press.[2]Hua,Loo-Keng.(1979).An introduction to number theory(In Chinese).Beijing:Science Press.[3]Neukirch,Jurgen.(2007).Algebraic number theory.Beijing:Science Press.[4]Hua,Loo-Keng,&Wang,Yuan.(1963).Numerical integration and its appli-cation.Beijing:Science Press.[5]Pan,Cheng-Dong,&Pan,Cheng-Biao.(1988).The elementary proof of primenumber theorem(In Chinese).Shanghai:Shanghai Science and Technology Press.[6]Lu,Changhai.(2004).The Riemann hypothesis(In Chinese).Beijing:Ts-inghua University Press.[7]Liu,Dan.(2011).Distribution of prime numbers iterated function.Journalof Mathematics Research,3(4),112-117.[8]Liu,Dan.(2012).Conversion of the Riemann prime number formula.SouthAsian Journal of Mathematics,2(5),535-541.。

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