药学英语第4版课后练习判断题翻译及答案
大学英语精读第四册课后翻译题及答案
UNIT11.我们接到通知,财政部长将于次日接见我们。
We were informed that the Minister of Finance was to give us an audience / receive us the next day.2.我觉得很奇怪,他似乎不记得自己的生日。
I thought it odd that he didn’t seem to remember his own birthday.3.学期论文最迟在下星期二交来,可是至今大部分学生却几无进展。
Next Tuesday is the deadline for handing in the term papers, but most students have hardly made a dent in the work so far.4.看到学生人数不断减少,校长心里很难受。
(pain)It pained the headmaster to find the number of students shrinking.5.在那个国家一般用现金付账,但支票变得普遍起来了,不久会代替现金作为人们结账的一种方式。
Cash is commonly used in paying bills in that country, but checks are becoming more popular and will, in a short while, replace cash as a way for people to settle their accounts.6.该公司声称,这条河流的污染不是它造成的。
The company claims that it is not responsible for the pollution in the river.UNIT21.比尔已是个成熟的小伙子,不再依赖父母替他做主。
药学英语课本学习知识翻译课后翻译节选中英双语对照第四版
本篇包括人卫第四版Unit 3B,Unit4A,5A,8A,10A,12AB,13A等七篇课文Unit 3 Text B The Other Side of Antibiotics抗生素的另一面Antibiotics have eliminated or controlled so many infectious diseases that virtually everyone has benefited from their use at one time or another. Even without such personal experience, however, one would have to be isolated indeed to be unaware of the virtues, real and speculative, of these “miracle” drugs1. The American press, radio, and television have done a good job of reporting the truly remarkable story of successes in the chemical war on germs. What′s more, any shortcomings on their part have been more than made up for by the aggressive public relations activity of the pharmaceutical companies which manufacture and sell antibiotics.抗生素可以消除或控制很多种感染疾病,以致几乎每人生病时都习惯于使用它而受益,但是如果一个人没有这样的亲身经历,他必定是离群索居才会不知道这些“特效药物”或真实或推测的优点。
(完整word版)新编大学英语4课后习题答案完整版
新编大学英语 4 课后习题答案完整版(Book 4)Unit 1Reading comprehension1略2 BDCAC AADBBVocabulary1. 1) A.entertainingB. entertainmentC. entertainedD. entertainer2) A. recognizable B. recognizedC. recognition3) A. tempting B. temptation C. tempt4) A. reasoned B. reasoning C.reasonableD. reason5) A. analyzed B. analytical C. analystD. analysis6) A. valuable B. valuation C. valued/values values7) A. humorist B. humor C. humorousD. humorless8) A.understandableB. understandingC.understand D. misunderstood6)11)3) a sense of inferiority4) a sense of superiority a sense of justice 7) a sense of shame 9) a sense of direction 10) a sense of urgency3. 1) Lively behavior is normal 2) Fast cars appeal to 3) diverse arguments4) I asked my boss for clarification 5) sensitive to light 6) Mutual encouragement 7) made fun of him8) persists in his opinion/viewpoint 9) to be the focus/center of attention 10) we buy our tickets in advance4. 1) certain/sure 2) involved 3) end 4) behavior disciplining 6) agreed7) individually 8) first 9) response 10) question2. 1) a sense of responsibility2) a sense of safety/security5) a sense of rhythm 8) a sense of helplessness5)attempt 12) voice13) directly 14) followed 15) troubleUnit 2Reading comprehension1略2 FFTFTFTFTTFTFTVocabulary1.Creating Compound WordsSTEP ONE:Column A Column B The compound words createdthrough day throughout up man upbeat, uplift draw eareddrawback teen ready teenagehand conscious handout, handwritten birth back birthday,birthstone chair distance chairman rag beat rag-eared everlift ever-readyover age overdue, overage long due long-distance, long-eared self stone self-consciousmile out m ileage, milestonetype wishing typewriter, typewrittenwell writer/written well-wishing, well-writtenSTEP TWO:1) long-2) upbeat 3) ever-ready 4) distanceoverdue 5) typewriter6) milestone 7) handwritten 8) uplifted 9) self-conscious 10) rag-eared11) birthday 12) throughout 13) drawbacks 14) chairman 15) teenage2.1) A. intrigued v. interestB. intrigue n. the act or practice of secretly planning to harm someone or make them lose their position of power2)A. straining v. try very hard to do something using all your physical or mental strengthB. strain n. a force that stretches, pulls or puts pressure on something3)A. savor n. taste; flavorB. savored v. enjoy the taste or flavor of; enjoy as much as you can4)A. treasure v. treat something as being very special, important, or valuableB. treasure n. a store of gold, silver, jewels, etc.5)A. credited v. consider ⋯as having achieved something or being the reason for itB.creditn. trust; faith6) A. boost n. an encouraging act of cheering somebody upB. boost v. make someone feel more confident and less worried7) A. note n. a short, usually informal, letterB. noted v. notice or pay careful attention to something8) A. signedv. write your signature on a letter or document toshow that you wrote it, agreed with itB. sign n. gesture used to express one 's meaning,idea,etc.9) A. totaled v. come to a certain amountB. total n. the whole amount10) A. v. fill something with a substanceB. stuff n. substance or material11) A. count n. the number that is reached when something is being countedB. count v. be important12) A. last v. manage to remain in the same situationB. last n. the remaining part of something13) A. complimented v. express praise or admiration of somebodyB. compliment n. an expression of praise, admiration, approval, etc.14) A. flood n. a large number or amountB.floodingv. arrive in large numbers 15) A. contact n. communication with a person, organization,country, etc.B.contact v. reach (someone) by message, telephone, etc.3. 1) thrives 2) strategytough: 1) D 2) B 3) E 4) F 5) C 6) A8) enterprise 9) follow up 10) characterized 11) lingered12) acknowledgeddeserve 5) spontaneous 6) sincere3) annual 4)7) investments4. column: 1) D 2) A 3) B 4) C5.1)A. complementary B. complimentary C. complimentary complimentary: 1) expressing admiration, praise, etc.2)given free of chargecomplementary: making something complete or perfect; supplying what is lacking or needed for completion2) A. stationery B. stationary C. stationarystationary: not moving, or not changing stationery: writing materials (e.g. paper, envelopes, etc.)3)A. typist B. typewriter C. typisttypewriter: a machine with a keyboard that you use for typing words directly onto a sheet of papertypist: a person who types, especially one employed to do so 4)A. vulgar B. vague C. vague vague: 1) not clearly expressed, known, described or decided2) not clear in shape; not clearly seen vulgar: not having or showing good taste or good manners; not educated5)A. pad B. pat C. padpad: 1) several sheets of paper fastened together, used for writing, drawing, etc.2) a piece of soft thick cloth or rubber which is used to protect apart of the body, give shape to something or clean something 6)A. own B. owed C. owes D. ownedowe: 1) have to pay, for something already done or given2) feel gratefulown: 1) a. belonging to oneself and to no one else2) v. possess (something), especially by lawful right6.1)searched2) clever 3) solution 4) wasted 5) tolerate 6) hidden 7) dumb 8) subject 9) noise 10) extra 11) purchased 12) replaced 13) appreciation14) hurried 15)warrant 16) strangeUnit 31 Understanding the Organization of the Text(1)Introduction (para 1)It has been proven repeatedly that the various types of behavior, emotions, andinterests that constitute being masculine and feminine are patterned by both heredityand culture.(2)There is a cultural bias in education that favors boys over girls. (para. 2-4)Supporting evidenceA.Teachers called on males in class far more than on female students. (para 2)i)Its consequence: This has a tremendous impact on the learning process.ii)The reason for this: Active classroom participants develop more positive attitudesand go on to higher achievement.iii)Two examples:a.In many of the former all- women's colleges, the boys were taking over the class-room discussions and active participation by women students had diminished noticeably.b. A similar subordination of female to male students has also been observed in law and medical school classrooms in recent years.B.Teachers assigned boys and girls different tasks according to stereotyped gender roles. (para. 3)i) Its consequence: This prevented girls from participating as actively as boys in class.ii) An example: A teacher had the little boys perform the scientific experiment while the girls were given the task of putting the materials away.C.Gender-biased education is also reflected in the typical American teacher ' assumption. (para 4)i) The assumption: Boys will do better in the hard, masculine subjects of math and science while girls are expected to have better verbal and reading skills.ii) Three examples:a. American boys do develop reading problems, while girls, who are superior to boys in math up to the age of nine, fall behind from then on.b. In Germany, all studies are considered masculine and it is girls who develop reading problems.c.In Japan, where early education appears to be nonsexist, both girls and boys do equally well in reading.(3)The educational bias begins at home. (para 5)A.Supporting evidence:i) Boy preschoolers were permitted to go away from home in a much wider area than girl preschoolers.ii) Boys were encouraged to develop intellectual curiosity and physical skills, while girls are filled with fears of the world outside the home and with the desire to be approved of for their goodness and obedience to rules.B.The consequence when these lessons carry over fromthe home to the classroom: Girls are generally observed to be more dependent on the teacher, more concerned with the form and neatness of their work than its content, and more anxious about being right in their answers than in beingintellectually independent, analytical, or original.C.Conclusion: Through the educational process that occupies most of the child 'sw aking hours, society reinforces its established values and turns out each sex in its traditional and expected mold.2 CBDBCDVocabularyapproved 5) Bias1. 1) genetic 2) assign 3) noticeably 4)6) deprived 7) constituted 8) participation 9) unintentional 10) postgraduate2. conscious –unconscious negativeencourage –discourage –inferior positive –superiordirectly –indirectly biasedlimited – unlimiteddependentappropriately – inappropriately3. 1) C 2) D 3) A 4) E 5) B 6) C 7) F 8)B4. 1) turn out 2) carry over 3) calling on 4) put away 5) fallen behind 6) take overUnit 4Reading Comprehension 1. 1) Introduction(para 1)It is introduced in the article how teachers and parents canencouragecreativity in children.2) An important strategy for parents and teachers to follow (para. 2-3)A. The strategy:To encourage children to spend time thinking anddeveloping new ideas.fairsexistnonsexistindependentB.The significance for adopting the strategy:If children can be taught to think creatively, they will be better able tofunction in tomorrow 's society.3)The definition of creativity (para. 4-5)A.Who successful students and adults are:Those who can find a number of ways to approach problems.B.What creative people can do:They can use what they have to produce original ideas that are good forsomething.4) A big problem in school (para. 6)The problem: Children can obtain and give back information, but can 'tg fuireout ways to apply what they know in new situations.5)A new approach to teaching (para 7)A. The approach: Combining the basics with the activities where students mustuse their imaginations.B. How to do so: By asking questions and meanwhile praising their ideas andnew thoughts.C.How to facilitate the process: To create an atmosphere in which there is norisk in being creative-- a place where wild ideas are honored and valued,never scorned or dismissed.6)Things parents can do at home to encourage creativity (para. 8-10)A.To involve children in decision making.B.To help children to understand the consequences of various decisions.C.To encourage them to talk out loud about things they are doing. The reasonfor doing so: Talking out loud improves language skills and thinking skills.D.To show a sense of humor. The reason for doing so: Children can seecreativity in its purest form.E.To give children choices from their earliest age.Examples:a.When they are very young, let them choose between two food items forlunch.b. B. When they grow older, let them decide how to use their time or spendtheir money2 understanding specific informationTFFTTFFT2. 1) perfected2) approaching3) value 4) functions5) approach6) perfect7) honor8) function 9) honor10) value3. 1) dismiss2) consequences3) promoting 4)applies 5) vitalVocabulary 1. 1) confused, confusion humorous, humor4) strategy, strategic combination, combined7) creation, creative 2) intelligence, intelligent 5) motivated, motivation 8) pursuit, pursuing3)6)9)6) scorned 7) conventional 8) original4. 1) consciously 2) innovative 3) unconsciously 4) determines 5) Imagination6) aware 7) control 8) created 9) extension 10) technique11) vulnerable 12) unfolding 13) joyful 14) gain15) Applyunit 5Understanding the organization of the text1)Introduction (para. 1)Athletes are chosen to be role models, and they can choose only to be good orbad ones.2)Athletes should be role models. (para. 2-5)The author 's arguments:A. Athletes should not refuse the responsibility of being a role model whileaccepting all the glory and the money that comes with being a famous athlete.(para. 2)B. I try to be a positive role model, but that doesn 't mean I am perfect. (para. 3)C.Qualities of a positive role model: (para. 4)a. He influences people 's livesin a positive way.b. He gives of himself in time or money to help those who look up to him.c.He displays the values like honesty and determination.D.Athletes cannot take the place of parents, but can help reinforce what parentstry to teach their children. (para. 5)3)People sometimes expect so much that some athletes don 'twant to be rolemodes. (para. 6-7)A. Sometimes people put athletes on a pedestal.Example: I have had parents in Utah put my picture on the wall beside JesusChrist. (para. 6)B. Constantly being watched by the public can be hard to tolerate at times.Example: 1: Negative publicity Michael Jordan received aboutgambling.2. Ever since I played on the Dream Team, I cango anywherewithout being the center of attention and I can 't even buy amotorcycle I really want. (para. 7)4)Conclusion (para 8-9)The good things about being a role model outweigh the bad. A. It 's a great feeling to think you are part of the reason that a id decided to tryto be good.B. But parents should remind their kids that there are no perfect human beings.C.Charles Barkley is a good role model.2、 F T F T F F F F T F T FVocabulary2. 1) is bound to 2) follow their lead 3) goes too far/is going too far4)take the place of 5) dropped out 6) have a fit 7) measure up to8) look up to 9) Let 's face it 10) you name it3. 1) outgrown 2) outdo 3) outwitted 4) outweigh 5) outlivedUnit 6Vocabulary Practice1.1)sensiblesensible: having or showing good sense; reasonable sensitive: easily hurt, upset, or offended by things that people say2)relativerelevant: directly connected with the subject or problem being discussed or consideredrelative: considered in relation or proportionto somebody/something else; comparative3)mechanismmachine: 机器mechanism: a structure of working parts functioning together to produce an effect4)requiresrequire: need somethingrequest: ask for something politely or formally5)eliminatereduce: make something smaller in size, number, degree, price, etc.eliminate: completely get rid of something that is unnecessary orunwanted6)crashcrash: a breaking to pieces especially by or as if by collision collision: an accident in which two or more people or vehicles hit each other while moving in different directions2.1)character 2) end up 3) Rarely 4) casual 5) risky 6) all manner of 7) inform 8) sensible 9) definitively3.1) On the strength of 2) all manner of 3) feed on 4) reduce ⋯to 5) end up6) associated with 7) focus on 8) turned to 9) participatein 10) involved inunit 71. C E B D A F2. relearn 再学习regain 收回,重新获得redo 重做,再做rewrite 重写,改写rearrange 重新整理reclaim 要求归还,收回remodel 重新塑造,改变replace 取代rephrase 重新措辞rejoin 再结合,在加入reform 改革readjust 重新调整reunited (使)再结合rebroadcast 转播,重播reread 再读review 复习3. B A D A D C A A A Bunit 91. 1) observation 2) available 3) discoveries 4) acceptance5)experimentation6)inventions 7) evolution 8) adaptable 9) innovative 10) objectivity2. 1) out of the ordinary 2) preceded 3) To be exact 4) Contradict(ed) 5) ProsperityCOLUMN A COLUMN Binvention inventavailable AvailInnovation InnovateAdaptable AdaptDiscovery DiscoverAcceptance AcceptEvolution EvolveObjectivity ObjectiveObservation ObserveExperimentation ExperimentProsperity Prosperdisastrous disaster6) Gave birth to 7) Catch our breath 8) had in mind 9) proposed 10) converted 11) disastrous 12) negative3. 1) She had hardly sat down2)Especially if/ when you want to reserve a seat3)is not necessarily the most useful4)What sort/kind of person do you have in mind5)There 's a limit on the time6)Spend part of his childhood7)three times as many girls as boys8)as do most of the people who live in this village9)but on the other hand it would be sad to lose the family atmosphere10)Depite/ In spite of international pressure。
大学英语4课后cloze及翻译原题带答案整理完整清晰
大学英语4课后cloze及翻译原题带答案整理完整清晰精品文档大学英语4课后cloze及翻译原题带答案Cloze1In the 21st century, clouds and stormyweather no longer automatically bring operationsto a halt or force a change in targets(目标). Technologies such as the Global PositioningSystem now allow cruise missiles(巡航导弹)and other smart weapons to home in on(瞄准并飞速接近)their targets. But the weather still is afactor that must be reckoned with, especiallywith precision-guided weapons that must behighly accurate (高度精确)to be effective. Fortunately, the ability to obtain weatherforecasts will get better. In the next few years,remote weather sensors(传感器)will growrapidly on unmanned vehicles. This will create anetwork of observing platforms that will give commanders an instant overview of weather in精品文档.精品文档the battle zone(战场). In some areas you'll havedirect delivery of weather information straightfrom the computes to black boxes in aircraft andother vehicles. That will be especially importantfor target-bound aircraft(瞄准目标的飞行器).Such technology will give whoever possess ita tremendous edge(优势)over their enemy andenable them to use developing weatherconditions to their advantage. As we get superiorsatellites into space, we'll gain huge advantagesin observing meteorological conditions indenied areas(盲区), where we don't havepeople on the ground. And our modeling abilitywill continue to improve as our computers getmore powerful. The past 10 years havewitnessed a revolution in our communicationsand computer abilities. It's exciting to think ofwhat the next 10 years will bring.精品文档.精品文档在第二十一世纪,云层和暴风雨天气不再自动带来业务停顿或迫使目标的变化(目标)。
药学英语,课后翻译
药学英语Unit 1Inflammatory reaction induced by local ischemic injury is one of the important pathophysiological characteristics after ischemic stroke, so anti-inflammatory therapy may be an effective strategy for acute ischemic stroke. Enlimomab, an anti-ICAM-1 murine monoclonal antibody, can inhibit the recruitment and activity of polymorphonuclear leukocytes, reduce their adhesion and decrease cerebral infarct size in experimental stroke models. However, a much larger efficacy trial including 625 acute ischemic stroke patients has shown that enlimomab was ineffective on ischemic stroke patients even with a worsening outcome. The therapeutic time window of rt-PA is within 3 hours of ischemic onset. Administration of the drug after more than 3 hours of ischemic onset has no significant therapeutic implications and may even end up with an increased hemorrhagic risk. A study using the animal ischemic model indicated that combination of anti-inflammatory therapy and rt-PA could significantly and might as well extend the therapeutic time window of thrombolysis.局部脑缺血损伤引起的炎症反应是缺血性脑卒中发生后的重要病理生理特征,因此,抗炎治疗策略可能是治疗急性缺血性脑卒中的一种有效方法。
药学英语课后翻译
良药滥用-----Translation1. Although the development of antibiotics has been of incalculable benefit to mankind, ithas also given rise to serious complications.2. The widespread use of antibiotics has resulted in the natural evolution of strains ofdisease germs which are resistant to such medications.3. A new multidrug-resistant tuberculosis, now prevalent in the world, causes seriousinfections that may not respond to chemotherapy.4. Some antibiotics are effective against a large range of microorganisms, they are,therefore, known as broad-spectrum antibiotics.5. Some drugs may not cause physical dependence, or addiction, but many persons dobecome habituated to their use.6. Drug abuse is thought of as the misuse of drugs potentially harmful to the individualuser or to society.7. Many persons, believing that antibiotics can cure any disease, press their doctors for adose of penicillin for such virus ailment as influenza.8. Addiction is the body’s continued need for drug s because of their physiological effectsafter they are first taken.9. In comparison, the inadequacies and potential dangers of antibiotics are much lesswidely known.10. Antibiotics are used so carelessly around the world that they are creating a new healththreat to mankind.Vitamins ---- Translation1. Researchers found that the level of vitamin C stored in the body of the victim with acommon cold fell drastically and was close to the level of people suffering from scurvy.2. Minor degrees of vitamin C deficiency are common, though outright scurvy only occurwhen the diet is markedly deficient in fresh fruits and vegetables.3. Vitamins are organic compounds that must be supplied in the diet or injected into thebody to maintain health.4. Vitamins produce no energy but play an essential role in the transformation of energyand in the regulation of metabolism.5. Vitamins are classified/distinguished by the letters of the alphabet, such as vitamins A, C,D, E, K and the B-complex.6. Vitamins and minerals are found in small amounts and are needed in minute quantities,as compared with the other nutrients.7. The diseases which develop from the absence of vitamins are known as vitamindeficiency diseases. For example, a lack of vitamin A brings about night blindness; adeficiency of vitamin D results in rickets.8. Some vitamins are soluble in fats whereas others are soluble in water. They are,therefore, termed fat-soluble and water soluble vitamins respectively.9. In addition to the general nutrients, another two groups of nutrients, vitamins andinorganic, or mineral, salts are also required by the body.10. Most nutrients contain more than one nutrient, but no single food contains all thenutrients in the amounts you need.化学与物质----Translation1. Briefly speaking, a scientist differs from an artist mainly in that a scientist not onlyinterprets the outer world, but also tries to transform it into a better one.2. Science begins with necessity, curiosity, and questions about the unexplainedphenomena in nature.3. The ways in which an element or a compound combines or reacts with other things areits chemical properties.4. The chemist is interested in the composition and properties of substances and thetransformations they undergo during a chemical reaction.5. It is very easy to fall into the habit of taking some painkiller when there is any slightpain.6. The delicate operations performed by surgeons today would not be possible withoutanesthetics.7. Today it is generally recognised that the human body is a chemical factory in whichcountless complex chemical and physical changes are constantly taking place.8. The substance salt is composed of the metal sodium and the corrosive gas chlorine, butits chemical properties are quite different from those of sodium and chlorine.9. Chemotherapy is the treatment of disease by the administration of chemical substanceswhich kill or prevent the growth of pathogenic organisms within the body.10. Substances that lessen pain but do not affect other sensations are called pain relievingdrugs.麻醉药Translation1. It is not many years since a man who had to have an operation felt all its pain.2. It is attributable to the discovery of anesthetics that surgeons can now perform all kindsof operations without causing pain.3. Spinal anesthesia produces excellent anesthesia and relaxation for the performance ofmany operations on the lower parts of the body.4. The exact mechanism in which the general anesthetic drugs exert their effect on thebrain is still unknown, although many theories have been proposed.5. The introduction of anesthetics to surgery has made possible much more delicate andlengthy operations, thus greatly extending the field of surgery.6. Narcotics are applied to those drugs which are sedative in their action upon the body butwhich also produce insensibility to pain.7. Contrary to what one might think, it’s only 50 years or so since penicillin, t he antibioticonce regarded as the wonder drug, came into being.8. Scientists point out that since the sedative action of a drug results from its effect on thenerves, it must possess solubility in the fluids of the body which surround the nerves.9. An anesthetic must be volatile if it is to be administered through oral inhalation, whilethose which can be administered through the rectum or injected into the spine do nothave to be volatile.10. In spite of the danger of a patient’s contractin g pneumonia after the use of ether as ananesthetic, ether is still widely employed because the anesthesia it produces is one ofdeep relaxation.绿色药房-草药Translation1. The plant kingdom was once man’s only pharmacy. Y et when you enter a modernchemist’s shop today, you can hardly find a sign of the use of plants in medicine.2. Today the number of plants used in medicine has decreased, but hidden away in manypills, capsules, and medicine bottles are the active chemicals originally found in theplant kingdom.3. Some chemicals which plants make may be poisonous, others may be chemicals that areextremely valuable to us as medicines.4. During the many thousands of years that man has been on the earth, he has been tryingout various plants that grew around him.5. There has existed for many years mistrust, suspicion or hostility between the orthodoxand the herbal practitioner which threatens the possibility of a good workingrelationship.6. When one considers the therapeutic impact of quinine, it is evident how great is the debtof medicine to plant-derived drugs.7. However, the past few decades have witnessed an obvious diminution in the number ofplant-derived drugs introduced into medicine.8. The legacy of traditional Chinese medicine is a treasure house with an inexhaustiblesupply of new potential drugs which is to be explored with an introduction of newapproaches.9. Had pharmacological approaches not been introduced into the investigation of Vincarosea, the discovery of vincalcukoblastine would have been postponed by many years.10. Western practitioners find it difficult to believe that someone who knows nothing of adisease mechanism could still be capable of curing it.有机化学Translation1. The remarkable advances made in modern medicine would not have been possiblewithout the aid of chemistry.2. Since the body is essentially a chemical machine, a knowledge of the chemistry ofbodily functions seems essential to the physician.3. The production of food by plants and animals involves the rearrangement of atoms inmolecules.4. Fortunately, few kinds of work seem to urge people on to success more effectively thandoes the pursuit of chemistry.5. So far the motive behind the search for synthetics has been a wish to produce betterthings for less money, and for more people.6. Isolation of increasing numbers of purified materials from living forms and recognitionof the fact that all contained carbon gave birth to organic chemistry.7. When coal is burned in a furnace it combines with oxygen to give carbon dioxide, a newsubstance with different composition and properties from coal and oxygen.8. Many specific chemical reactions are important because of the energy which they use orsupply.9. In the study of organic chemistry, students are expected to use familiar symbols whichare constructed into two- or three-dimensional molecular formulas.10. From the food we eat, the clothes we wear to the buildings we live in, all have beenfashioned to a considerable extent by organic chemistry.新药研制1Translation1. Formerly, drugs were extracted from natural plants and animal sources, and therapeuticuse was based on traditional experience.2. Drug development strategies involve serendipity, molecular roulette, programmed basicresearch with synthesis of specific chemical, etc..3. Though it’s the most satisfying in the development of new drugs, the approach isexpensive and there is no guarantee of success.4. When a drug is used by millions, there are certain to be adverse reactions even thoughthe risk to any individual is small.5. Most drugs have a safe upper limit of dosage; beyond this toxic effects may be expectedto occur.6. Penicillin, one of the most powerful killers of bacteria was discovered quite by accidentby Alexander Fleming.7. Pharmacological experiment on a new drug determines whether the drug has the desiredprofile of action in model system.8. The increase in knowledge of biochemical mechanisms results in a more rationalapproach to the development of new drugs.9. Extensive formal toxicological tests are required before a new drug can be used onpatients.10. Chemists and biologists have now attached great importance to such fields of researchas molecular biology and biochemical pharmacology.新药研制2 Translation1. The rationale for the development of new drugs should be provide better drugs; better inthe sense of being either more effective, safer or cheaper.2. The representative of the pharmaceutical manufacturer has been specially trained topromote his particular new product.3. Only after animal studies have proved efficacy can clinical evaluation of new drugs beundertaken.4. New drug evaluation in man can be divided into four phases each of which should beconducted under strict supervision.5. A dose-ranging study should only be performed on volunteers who are informed aboutthe implications of the tests, and who give their consent freely.6. Dose-ranging studies should only be performed under medical supervision, as there existsome possible risks during the test.7. Large scale clinical trials in Phase 3 are to establish new drug’s profile of action andfrequency of adverse effects.8. The expensive cost in drug development is borne by the pharmaceutical manufacturer,which justifiably expects to recoup it when the product is finally marketed.9. Information about the new drug published in well-established journals is more reliablethan that offered by the medical representative whose livelihood depends on the abilityto promote the product.10. Heavy investment in promotion has not simply led to the use of undistinguished newdrugs, but to a higher cost of the drugs as well.药理学范畴Translation1. The science of the effects of drugs on the body is called pharmacology, and the scientistswho study it are pharmacologists.2. Pharmacology is not a science that can be studied on its own, but that closely related toother branches of science.3. Pharmacologists should not only understand the normal processes that take place in thebody, but know how the functions of the body are affected by disease.4. Properly used, drugs are great blessing to mankind; improperly used, they could destroythe race.5. During the first part of the twentieth century there have been enormous strides in thefield of pharmacology.6. Man continues to strive, not only for a longer life span, but for a healthier one as well.7. With the frequent use of more than one therapeutic agent by a patient, particularly theelderly, drug interactions that result in toxicity are likely events.8. The clinician is interested primarily in drugs that are useful in the prevention, diagnosis,and treatment of human diseases.9. Most of the natural drugs are now highly purified and differ little from syntheticchemicals, the interests of the clinician in pharmacognosy are correspondingly decreased.10. As a border science, pharmacodynamics borrows freely from both the theories andexperimental techniques of physiology, biochemistry, immunology, pathology, etc..。
药学英语翻译答案
药学英语翻译答案一、熟悉下列句子的翻译1. In addition to the revolution in new classes of drugs, an equally momentous revolution is taking place in drug delivery.除药物种类的革命外,药物给药系统也在进行一场同样令人震撼的革命。
2. The body can make about a trillion different antibodies, produced by shuffling and reshuffling their constituent parts.通过对构成成分的改组和再改组,机体可以产生约一万亿个不同的抗体。
3. Under current law, all new drugs need proof that they are effective, as well as safe, before they can be approved for marketing.现有法律要求,所有的新药都必须具有其有效、安全的证据才能被批准上市。
4(There is no agreement whether nursing mothers could use Alexan. 哺乳期妇女是否能用爱力生尚无统一意见。
5. The prescription must be signed and dated by the practitioner and include his address.处方必须由医生亲笔签名,并注明日期和医生的地址。
6. Cells possess a nucleus which contains genetic information in the form of DNA.细胞含有一个细胞核,其中含有以脱氧核糖核酸(DNA)形式表达的基因信息。
7. A drug that is not covered by patent rights may be available in several proprietary formulations of the same generic preparation.没有专利权保护的药物可以用于同一个仿制剂型的多个专利配方中。
药学英语Unit4 Text A注释及译文
Unit FourText A The Scope of PharmacologyIn its entirety, pharmacology embraces the knowledge of the history, source, physical and chemical properties, compounding, biochemical and physiological effects, mechanisms of action, absorption, distribution, biotransformation and excretion, and therapeutic and other uses of drugs. Since a drug is broadly defined as any chemical agent that affects living processes, the subject of pharmacology is obviously quite extensive.1.entirety [en'taɪərɪti:] n.整体,全面in its entirety作为一个整体2. compounding ['kɑmpaundiŋ] n.配料;组合;复合3. Mechanism ['mekənizəm] n. 机械装置;构造, 机制;办法, 技巧, 途径4. absorption [əb'sɔrpʃən] n.吸收;吸收过程;吸收作用;专注,专心致志;合并;同化5. distribution [,distri'bju:ʃən] n.分发, 分配;散布, 分布6. biotransformation [,baiəu,trænsfə'meiʃən] n.生物转化metabolism [mɪ'tæbə,lɪzəm] n.新陈代谢7. excretion [eks'kri:ʃən] n.(动植物的)排泄,排泄物8. therapeutic [,θerə'pju:tik] adj.治疗(学)的;疗法的;对身心健康有益的9. living ['liviŋ]adj.活(着)的;现存的, 在使用中的;逼真的, 生动的n.生计, 生存之道;生活方式整体而言,药理学包括药学发展的历史,药物的来源、理化性质、配伍,药物对机体的生化过程和生理功能的影响,药物的作用机制,药物的吸收、分布、生物转化和排泄,药物的治疗作用和其他作用。
药学英语翻译练习1
2. 动词等转换为汉语名词 1)动词转换为汉语名词 含义比较抽象的动词,有时难于用对应的汉语动 词表达,可转换为汉语名词。 The skeletal system is defined as the frame work of bones and cartilage that protects our organs and allows us to move. 骨骼系统的定义为:由骨和软骨组成的保护器官 并产生运动的框架。 (define转换为汉语名词“定义”) This paper aims at discussing the pathogenesis of atherosclerosis as well as treatment. 本文的目的在于:不仅讨论动脉粥样硬化的治疗, 而且讨论其发病机理。
•It has been reported that DMSO has some desirable properties that are considered to be useful in managing the brain trauma patient. •报道称二甲亚砜具备一些可取的特质,被认为可 用于治疗创伤性脑损伤。
• 3)副词转换为汉语名词 • Adverse drug reactions often occur early in therapy. • 译文:药物不良反应通常发生在治疗的早期。 • The erosion of the plug can be controlled enzymatically. • 译文:酶能控制栓塞的侵蚀。
• Nature should be so rich in potential lead compounds. • 自然界富含潜在先导化合物。 • Obviously this system is applicable only to drugs that can be ionized. • 该系统显然只适用于可以被离子化的药物。 • Just as the body is dependent on the skeleton for its structural stability, so is the skeleton dependent on the body for its maintenance. • 正如身体依赖骨骼以维持其结构的稳定性那样, 骨骼依靠身体以维持其生存。
药学英语第4版课后练习判断题翻译及答案
1.much of our present physiological knowledge has been found from theexperiments and studies on human beings. 我们目前的生理知识已经发现从实验和研究人类。
F2.the cell are grouped together to form tissues which,thus,consist of a lot of cells.细胞被组合在一起形成的组织,因此,包括大量的细胞。
F3.living cells break down glucose and fats to provide energy for otheractivities,which are called catabolism. 活细胞分解葡萄糖和脂肪提供能量等活动,被称为分解代谢。
F4.the white cells play an important role in defense against infection. 白细胞在抗感染防御中起重要作用。
Y5.the right atria pumps deoxygenated blood to the lungs where it absorbs oxygenfrom the air. 右心房缺氧血液泵至肺部,它吸收空气中的氧气。
F6.the nervous system uses electrical signals to transmit information very rapidly tospecific cells. 神经系统利用电信号将信息传送到特定的细胞。
T7.the level of sodium increases in the extracellular fluid, the cardiac muscle cellsbecome too excitable and may contract. 细胞外液中的钠水平升高,心肌细胞的兴奋性,可能成为合同。
药学英语第4版课后练习判断题翻译及答案(2020年7月整理).pdf
多媒体技术教程》(第三版)习题解答第1章绪论1.多媒体信息系统和多媒体计算机有什么不同?在概念上应如何看待两者之间的关系?多媒体信息系统是新一代高度集成的、功能强大的、智能化的计算机信息系统,它是提供多媒体信息、辅助人们对环境进行控制和决策的系统,是基于计算机、通信网络等现代化的工具和手段,服务于管理领域的信息处理系统。
而多媒体计算机指的是硬件设施,多媒体计算机是多媒体信息系统得以应用的平台。
2.试归纳叙述多媒体关键特性以及这些特性之间的关系。
多媒体的关键特性主要包括信息载体的多样性、交互性和集成性这三个方面,这既是多媒体的主要特征,也是在多媒体研究中必须解决的主要问题。
信息载体的多样性是相对于计算机而言的,指的就是信息媒体的多样化,有人称之为信息多维化;多媒体的第二个关键特性是交互性,多媒体系统将向用户提供交互式使用、加工和控制信息的手段,为应用开辟更加广阔的领域,也为用户提供更加自然的信息存取手段;多媒体的集成性主要表现在两个方面,一是多媒体信息媒体的集成,二是处理这些媒体的设备与设施的集成。
信息载体的多样性是集成性的基础,没有多种信息媒体,也就无法进行多媒体信息的集成化处理;而处理多媒体的设备与设施的集成性是实现交互性的前提,没有系统、网络、软硬件设施的集成,就无法为用户交互式使用、加工和控制信息提供平台。
3.为什么说多媒体缩短了人类信息交流的路径?人类与计算机进行信息交流的目的是什么?与以往的方法相比,计算机在数据处理方面有了很大的改善。
计算机所提供的功能强大的数据组织和构造技术,如传统数据结构中的数组、向量、队列、堆栈、树和堆等,为动态地加工和处理数据提供了基础。
高效的算法和高速的网络通信,大大地加强了用文字和数据表示概念的能力并加速了它的传递过程。
但人类并不是仅仅依赖文本这一类单一的数据形式来传递所有的信息和接受概念的,图像、声音等多媒体信息都是人类获取和传递信息极为重要的渠道。
图像的信息量最大,一幅画胜过千言万语,最直观、最能一目了然。
药学试题英语翻译及答案
药学试题英语翻译及答案1. 翻译下列药学专业术语:- 阿司匹林- 抗生素- 处方药- 非处方药答案:- 阿司匹林: Aspirin- 抗生素: Antibiotics- 处方药: Prescription drugs- 非处方药: Over-the-counter (OTC) drugs2. 将以下句子从英语翻译成中文:- "The drug was approved by the FDA for use in treating cancer."- "Pharmacists are responsible for ensuring the safety and efficacy of medications."答案:- "这种药物被FDA批准用于治疗癌症。
"- "药剂师负责确保药物的安全性和有效性。
"3. 根据题目所给的药学知识,回答以下问题:- 什么是药物的半衰期?- 药物的剂量如何影响其疗效?答案:- 药物的半衰期是指药物浓度下降到其初始浓度一半所需的时间。
- 药物的剂量会影响其疗效,剂量过低可能无法达到治疗效果,剂量过高则可能导致毒副作用。
4. 翻译以下药学文献摘要中的关键词:- Pharmacokinetics- Drug metabolism- Bioavailability答案:- 药动学- 药物代谢- 生物利用度5. 根据题目所给的药学知识,解释以下术语的含义:- 药物相互作用- 药物耐受性答案:- 药物相互作用是指两种或两种以上的药物同时使用时,它们之间的相互作用可能影响药物的疗效或安全性。
- 药物耐受性是指机体对药物的反应随着时间的延长而减弱,需要增加剂量以获得相同的效果。
6. 翻译以下药学相关的句子:- "The new drug has shown promising results in clinical trials."- "The side effects of the medication should be carefully monitored."答案:- "这种新药在临床试验中显示出了有希望的结果。
(整理)药学英语课后翻译
.VitaminsFoods That Fight CancerChemistry and MatterAnestheticsGreen Pharmacy Herbal MedicineIntroduction of Organic ChemistryDevelopment of New Drugs 1Development of New Drugs 2The Scope of PharmacologyBiopharmaceuticsDrug Abuse翻译Vitamins1. 研究人员发现普通感冒患者体内维生素c 水平急剧下降,接近坏血病患者水平。
2. 虽然只有当饮食中新鲜水果、蔬菜严重缺乏时人才会患上坏血病,但轻度维生素c 缺乏症还是普遍存在的。
3.维生素是有机化合物,必须通过饮食或肌肉注射予以补充,以维护身体健康。
4.维生素不产生能量,但却在能量转换及新陈代谢调节方面起着重要作用。
5.维生素是按字母分类的,如维生素A、C、D、E、K和复合B等。
6.和其他营养素相比,维生素和矿物盐的存在量较少,而需要量也很少。
7.由于维生素缺乏而引起的疾病叫维生素缺乏症,例如,维生素A缺乏出现夜盲症,维生素D缺乏导致佝偻症。
8.有些维生素溶解于脂肪,而其他的则溶解于水,故它们分别被称为脂溶性维生素和水溶性维生素。
9.除了一般的营养素之外,另两类营养素——维生素和无机盐或矿物盐也是人体必需的。
10.大多数食品含有多种营养素,但没有哪一种食品囊括人体所需的所有营养素。
Foods That Fight Cancer1.充分的统计资料证明,吸烟者较不吸烟者更有可能患肺、喉及舌等部位的癌症。
2.水果蔬菜富含多种抗氧化剂,该物质能杀灭被认为将诱发细胞癌变的无氧基。
3.均衡饮食将为机体提供正常运转所需的维生素、矿物盐、蛋白质、淀粉及糖类等多种营养素。
4.患肺癌的危险性直接与每天吸烟的数量有关,数量越大,危险越大。
5.甚至吸烟者亦可通过每天食用一些胡萝卜、菠菜或其他蔬菜水果来预防肺癌。
第四版药学英语课后翻译(节选)[最新]
药学英语课后翻译Organic Chemistry Translation1. 没有化学的帮助,现代医学所取得的令人瞩目的进展是不可能的。
The remarkable advances made in modern medicine would not have been possible without the aid of chemistry.2. 既然人体从本质上讲是一台化学机器,那么,有人体功能的化学知识对医生来说就显得至关重要了。
Since the body is essentially a chemical machine, a knowledge of the chemistry of bodily functions seems essential to the physician.3. 通过植物和动物生产食品涉及到分子中原子的重新排列问题。
The production of food by plants and animals involves the rearrangement of atoms in molecules.4. 幸运的是,很少有其他工作能像研究化学那样更能激励人们去取得成功。
Fortunately, few kinds of work seem to urge people on to success more effectively than does the pursuit of chemistry.5. 迄今为止,寻求合成制品背后的动机便是祈盼以更少的钱为更多的人生产更好的东西。
So far the motive behind the search for synthetics has been a wish to produce better things for less money, and for more people.6. 人们从活体分离出越来越多的纯净物质,并认识到它们都含有碳元素,这样便诞生了有机化学Isolation of increasing numbers of purified materials from living forms and recognition of the fact that all contained carbon gave birth to organic chemistry.7. 煤与氧结合在炉中燃烧,生成二氧化碳——一种在成分和化学性质上都不同于煤和氧的全新物质。
药学英语课本学习知识翻译课后翻译节选中英双语对照第四版
本篇包括人卫第四版Unit 3B,Unit4A,5A,8A,10A,12AB,13A等七篇课文Unit 3 Text B The Other Side of Antibiotics抗生素的另一面Antibiotics have eliminated or controlled so many infectious diseases that virtually everyone has benefited from their use at one time or another. Even without such personal experience, however, one would have to be isolated indeed to be unaware of the virtues, real and speculative, of these “miracle” drugs1. The American press, radio, and television have done a good job of reporting the truly remarkable story of successes in the chemical war on germs. What′s more, any shortcomings on their part have been more than made up for by the aggressive public relations activity of the pharmaceutical companies which manufacture and sell antibiotics.抗生素可以消除或控制很多种感染疾病,以致几乎每人生病时都习惯于使用它而受益,但是如果一个人没有这样的亲身经历,他必定是离群索居才会不知道这些“特效药物”或真实或推测的优点。
药学英语翻译答案解析
一、熟悉下列句子的翻译1. In addition to the revolution in new classes of drugs, an equally momentous revolution is taking place in drug delivery.除药物种类的革命外,药物给药系统也在进行一场同样令人震撼的革命。
2. The body can make about a trillion different antibodies, produced by shuffling and reshuffling their constituent parts.通过对构成成分的改组和再改组,机体可以产生约一万亿个不同的抗体。
3. Under current law, all new drugs need proof that they are effective, as well as safe, before they can be approved for marketing.现有法律要求,所有的新药都必须具有其有效、安全的证据才能被批准上市。
4.There is no agreement whether nursing mothers could use Alexan.哺乳期妇女是否能用爱力生尚无统一意见。
5. The prescription must be signed and dated by the practitioner and include his address.处方必须由医生亲笔签名,并注明日期和医生的地址。
6. Cells possess a nucleus which contains genetic information in the form of DNA.细胞含有一个细胞核,其中含有以脱氧核糖核酸(DNA)形式表达的基因信息。
7. A drug that is not covered by patent rights may be available in several proprietary formulations of the same generic preparation.没有专利权保护的药物可以用于同一个仿制剂型的多个专利配方中。
药学英语Unit4 Text A注释及译文
Unit FourText A The Scope of PharmacologyIn its entirety, pharmacology embraces the knowledge of the history, source, physical and chemical properties, compounding, biochemical and physiological effects, mechanisms of action, absorption, distribution, biotransformation and excretion, and therapeutic and other uses of drugs. Since a drug is broadly defined as any chemical agent that affects living processes, the subject of pharmacology is obviously quite extensive.1.entirety [en'taɪərɪti:] n.整体,全面in its entirety作为一个整体2. compounding ['kɑmpaundiŋ] n.配料;组合;复合3. Mechanism ['mekənizəm] n. 机械装置;构造, 机制;办法, 技巧, 途径4. absorption [əb'sɔrpʃən] n.吸收;吸收过程;吸收作用;专注,专心致志;合并;同化5. distribution [,distri'bju:ʃən] n.分发, 分配;散布, 分布6. biotransformation [,baiəu,trænsfə'meiʃən] n.生物转化metabolism [mɪ'tæbə,lɪzəm] n.新陈代谢7. excretion [eks'kri:ʃən] n.(动植物的)排泄,排泄物8. therapeutic [,θerə'pju:tik] adj.治疗(学)的;疗法的;对身心健康有益的9. living ['liviŋ]adj.活(着)的;现存的, 在使用中的;逼真的, 生动的n.生计, 生存之道;生活方式整体而言,药理学包括药学发展的历史,药物的来源、理化性质、配伍,药物对机体的生化过程和生理功能的影响,药物的作用机制,药物的吸收、分布、生物转化和排泄,药物的治疗作用和其他作用。
药学英语第4版课后练习判断题翻译及答案
多媒体技术教程》(第三版)习题解答第1章绪论1.多媒体信息系统和多媒体计算机有什么不同?在概念上应如何看待两者之间的关系?多媒体信息系统是新一代高度集成的、功能强大的、智能化的计算机信息系统,它是提供多媒体信息、辅助人们对环境进行控制和决策的系统,是基于计算机、通信网络等现代化的工具和手段,服务于管理领域的信息处理系统。
而多媒体计算机指的是硬件设施,多媒体计算机是多媒体信息系统得以应用的平台。
2.试归纳叙述多媒体关键特性以及这些特性之间的关系。
多媒体的关键特性主要包括信息载体的多样性、交互性和集成性这三个方面,这既是多媒体的主要特征,也是在多媒体研究中必须解决的主要问题。
信息载体的多样性是相对于计算机而言的,指的就是信息媒体的多样化,有人称之为信息多维化;多媒体的第二个关键特性是交互性,多媒体系统将向用户提供交互式使用、加工和控制信息的手段,为应用开辟更加广阔的领域,也为用户提供更加自然的信息存取手段;多媒体的集成性主要表现在两个方面,一是多媒体信息媒体的集成,二是处理这些媒体的设备与设施的集成。
信息载体的多样性是集成性的基础,没有多种信息媒体,也就无法进行多媒体信息的集成化处理;而处理多媒体的设备与设施的集成性是实现交互性的前提,没有系统、网络、软硬件设施的集成,就无法为用户交互式使用、加工和控制信息提供平台。
3.为什么说多媒体缩短了人类信息交流的路径?人类与计算机进行信息交流的目的是什么?与以往的方法相比,计算机在数据处理方面有了很大的改善。
计算机所提供的功能强大的数据组织和构造技术,如传统数据结构中的数组、向量、队列、堆栈、树和堆等,为动态地加工和处理数据提供了基础。
高效的算法和高速的网络通信,大大地加强了用文字和数据表示概念的能力并加速了它的传递过程。
但人类并不是仅仅依赖文本这一类单一的数据形式来传递所有的信息和接受概念的,图像、声音等多媒体信息都是人类获取和传递信息极为重要的渠道。
图像的信息量最大,一幅画胜过千言万语,最直观、最能一目了然。
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多媒体技术教程》(第三版)习题解答第1章绪论1.多媒体信息系统和多媒体计算机有什么不同?在概念上应如何看待两者之间的关系?多媒体信息系统是新一代高度集成的、功能强大的、智能化的计算机信息系统,它是提供多媒体信息、辅助人们对环境进行控制和决策的系统,是基于计算机、通信网络等现代化的工具和手段,服务于管理领域的信息处理系统。
而多媒体计算机指的是硬件设施,多媒体计算机是多媒体信息系统得以应用的平台。
2.试归纳叙述多媒体关键特性以及这些特性之间的关系。
多媒体的关键特性主要包括信息载体的多样性、交互性和集成性这三个方面,这既是多媒体的主要特征,也是在多媒体研究中必须解决的主要问题。
信息载体的多样性是相对于计算机而言的,指的就是信息媒体的多样化,有人称之为信息多维化;多媒体的第二个关键特性是交互性,多媒体系统将向用户提供交互式使用、加工和控制信息的手段,为应用开辟更加广阔的领域,也为用户提供更加自然的信息存取手段;多媒体的集成性主要表现在两个方面,一是多媒体信息媒体的集成,二是处理这些媒体的设备与设施的集成。
信息载体的多样性是集成性的基础,没有多种信息媒体,也就无法进行多媒体信息的集成化处理;而处理多媒体的设备与设施的集成性是实现交互性的前提,没有系统、网络、软硬件设施的集成,就无法为用户交互式使用、加工和控制信息提供平台。
3.为什么说多媒体缩短了人类信息交流的路径?人类与计算机进行信息交流的目的是什么?与以往的方法相比,计算机在数据处理方面有了很大的改善。
计算机所提供的功能强大的数据组织和构造技术,如传统数据结构中的数组、向量、队列、堆栈、树和堆等,为动态地加工和处理数据提供了基础。
高效的算法和高速的网络通信,大大地加强了用文字和数据表示概念的能力并加速了它的传递过程。
但人类并不是仅仅依赖文本这一类单一的数据形式来传递所有的信息和接受概念的,图像、声音等多媒体信息都是人类获取和传递信息极为重要的渠道。
图像的信息量最大,一幅画胜过千言万语,最直观、最能一目了然。
而动态的影像视频和动画则更生动、更逼真、更接近客观世界的原型、更能反映事物的本质和内涵。
声音和文字也是信息的重要媒体,综合应用不仅有利于接受,也有利于存储(记忆)和保留。
这就意味着必须同时启动大脑的形象思维和逻辑思维,才能更好地获得更多更有用的信息。
因此,通过多种感觉器官用多种信息媒体形式向人提供信息才算是更好的表达方法,它不仅加速和改善了理解,并且提高了信息接受的兴趣和注意力。
多媒体正是利用各种信息媒体形式,集成地用声、图、文等来承载信息,也就是缩短信息传递的路径。
人类与计算机进行信息交流的目的是为了高效的获取、传递以及使用信息。
计算机的发展使得人类的信息处理手段得到加强,高速的计算能力扩展了对数据进行重复计算的能力,大规模的存储扩展了记忆信息的范围,高速通信网使得我们可以同远在异地他乡的同事、朋友、亲人甚至陌生人进行快速的信息交换。
这些机器成为我们与他人进行交流的中介。
第2章媒体及媒体技术1.为什么说媒体具有不同的抽象层次?对媒体的抽象层次和性质进行小结。
在获得媒体语义的过程中,抽象起着十分重要的作用,这种抽象是复杂的,而且与任务有关。
通常包括若干抽象层,每一个抽象层都包含着与具体的任务和问题域有关的模型。
从接近具体感官的信息表示层到接近符号的信息表示层,信息的抽象程度递增,而数据量则递减。
语义就是在从感官数据到符号数据的抽象过程中逐步形成的。
对不同媒体来说,媒体的语义是处于不同层次上的。
抽象的程度不同,语义的重点也就不同。
2.媒体的空间含义是指什么?媒体的时间含义是指什么?媒体的时空综合是指什么?什么是媒体的时空“上下文”?多媒体信息的空间意义有两种解释。
第一种是指表现空间,尤其是指显示空间的安排,目前在大多数研究中指的都是这一类。
第二种空间意义是把环境中各种表达信息的媒体按相互的空间关系进行组织,全面整体地反映信息的空间结构,而不仅仅是零散的信息片断。
2媒体的时间也有两种含义。
一是表现所需的时间,这是所有媒体都需要的。
第二种时间意义即同媒体的空间一样,媒体的时间也可以包含媒体在时间坐标轴上的相互关系。
媒体的时间关系存在于同步、实时等许多方面。
空间和时间组成了一个三维的时空坐标系统。
时间与空间的联系构成了媒体的时空“上下文”。
3.媒体的结合为什么会产生“感觉相乘”的效果?试举几个例子对此加以说明。
多媒体的作用在很大程度上是媒体之间结合产生的影响。
这种结合可以是低层次的,如在显示窗口中提供多种媒体信息片断,并将视觉、听觉相互结合,造成一种比较适合的媒体表现环境;也可以是高层次的,由各种媒体组成完全沉浸的虚拟空间,但应该如何结合现在还缺乏理论上的指导。
媒体之间可以相互支持,也可以相互干扰。
如果媒体之间是相互支持的关系,则这种媒体结合所产生的效果就是“感觉相乘”效应。
“感觉相乘”的例子很多,比如以视听并举的方式传递信息,比仅仅依靠观察或者解说能产生更好的效果;为了追求更强的沉浸感,虚拟现实环境的构建往往需要综合考虑视觉、听觉、触觉甚至嗅觉等多种感觉。
4.什么是媒体的语义?什么是隐喻?[不考]各种媒体的信息在最低层次上都是二进制位流。
如果仅仅作为信息的简单通道,系统不必了解媒体的语义,但如果要多媒体系统具有对媒体进行选择、合成等方面的能力,就必须赋予它媒体的语义知识,从而使得系统能在媒体之上对媒体进行比较、选择和合成。
媒体被赋予的媒体的语义知识即为媒体的语义。
在与多媒体系统交互的过程中,人所依据的是关于这种交互的概念模型,也称心智模型(Mental Model)。
这种概念模型的建立往往需要培训和经验,不易于被用户所接受。
一种较好的方法是模拟人对其他事物的知识和技能,把它们挪到多媒体系统中使用,媒体的多样性为这种模拟提供了一个很好的基础,这种模拟,就是隐喻技术。
5.研究声音心理学对声音的处理会带来哪些好处?试举例加以说明。
说明掩蔽、临界频带、相位对声音的影响。
[不考]各种声音可以互相掩蔽,也就是说一种声音的出现可能使得另一种声音难于听清。
纸张的沙沙声、鼓掌声、咳嗽声等往往会掩盖说话声和音乐声。
一般说来,在掩蔽音条件下,要听清被测量的测验音,就必须提高测验音的强度。
由于声音的掩蔽效果,可以欺骗人的听觉。
在频率的某一临界区里,各种声音强度是相互作用的,合成声音的响度由这些频率共同决定,但在临界区内不会改变。
如果超出临界区,声音的响度不再相互作用,随频率而变。
这个临界区就是临界频带,其宽度视其中心频率而定。
从声音的波形来看,声音的起点和方向也要反映声音的特性,这就是声音的相位。
当两个声音相同而相位完全相反时,它们将相互抵消;当两个声音相同而且相位也相同时,声音就会得到加强。
相位的确定对于多声道声音系统的设计非常重要,它可以应用在回声的消除、会议系统的声音设计上等。
6.声音的数字化过程是怎样的?什么是声音的符号化?声音在真实世界是模拟的,时间和幅度上是连续的,声音的数字化主要包括采样、量化、编码等步骤。
波形声音可以把音乐、语音都进行数字化并表示出来,但这并没有将它看成音乐和语音。
对声音的抽象化(即符号化)表示包括两种类型,一种是音乐、一种是语音。
声音的符号化即将声音转变为符号序列的过程。
7.声音的三维化处理所基于的原理是什么?双工理论的作用在何时体现得较为明显、何时又会失效?耳廓模型的建立是为了达到什么样的目标?[不考]声音的三维化处理基于的原理是双工理论。
人耳对声音定位的特性,通过大脑的综合作用后,对有差别的声音信号进行了相对于空间位置的定位。
很显然,如果按此方法使用计算机向人耳提供不同的声音,人的大脑也会综合出声音的位置信息。
双工理论过于简单,这一理论实际上是处于一个较理想的状态下,即无反射、无折射和单频率等,但实际上人耳所处的环境比双工理论描述的环境要复杂得多。
按照双工理论,人耳应没有在垂直平面的定位能力,不能够区分前后,因为在这些情况下两耳间声音的到达时间差ITD和两耳间声音的强度差IID都几乎为零;而实际上,人耳确实具有这方面的能力,这就是耳廓的作用。
耳廓模型的建立,主要为了模拟出人耳的听觉特性,具体来讲,就是模拟如何解析声源的本身信3号特征、声源的空间三维位置、声源所处的环境这3个因素。
建立正确的耳廓模型有利于创造三维的虚拟听觉空间。
8.视觉心理学对视觉信息的处理辅助体现在哪些地方?如何利用这些心理学特性?[不考]虽然光的物理特性与心理知觉有关,但并不是线性的。
把物理波的强度加倍,感受到的亮度却并不加倍。
对光的色调和亮度的感觉不仅和它的频率与强度有关,而且还和它出现的背景有关,和同时出现的周围光有关。
即使是最简单的物理因素也要受到神经系统的复杂分析,从而产生出复杂的心理知觉反应。
将物理性质和心理知觉区分开来,就是十分重要的。
在多媒体信息系统的设计过程中,充分考虑视觉心理学特性,能提供更好的人机交互方式。
第3章多媒体数据压缩1.如何衡量一种数据压缩方法的好坏?多媒体数据存在哪些类型的冗余?评价一种数据压缩技术的性能好坏主要有3个关键的指标:压缩比、图像质量、压缩和解压的速度。
希望压缩比要大,即压缩前后所需的信息存储量之比要大;恢复效果要好,尽可能地恢复原始数据;实现压缩的算法要简单,压缩、解压速度快,尽可能地做到实时压缩解压。
除此之外还要考虑压缩算法所需要的软件和硬件。
一般而言,多媒体数据中存在的数据冗余类型主要有以下几种。
(1)空间冗余在同一幅图像中,规则物体和规则背景的表面物理特性具有相关性,这些相关性的光成像结果在数字化图像中就表现为数据冗余。
(2)时间冗余时间冗余反映在图像序列中就是相邻帧图像之间有较大的相关性,一帧图像中的某物体或场景可以由其他帧图像中的物体或场景重构出来。
音频的前后样值之间也同样有时间冗余。
(3)信息熵冗余信源编码时,当分配给第i个码元类的比特数b(yi)= .lgpi时,才能使编码后单位数据量等于其信源熵,即达到其压缩极限。
但实际中各码元类的先验概率很难预知,比特分配不能达到最佳。
实际单位数据量d>H(S),即存在信息冗余熵。
(4)视觉冗余人眼对于图像场的注意是非均匀的,人眼并不能察觉图像场的所有变化。
事实上人类视觉的一般分辨能力为26灰度等级,而一般图像的量化采用的是28灰度等级,即存在着视觉冗余。
(5)听觉冗余人耳对不同频率的声音的敏感性是不同的,并不能察觉所有频率的变化,对某些频率不必特别关注,因此存在听觉冗余。
(6)其他冗余包括结构冗余、知识冗余等。
2.数据压缩技术可分为几大类?每类有何主要特点?根据解码后数据与原始数据是否完全一致进行分类,压缩方法可被分为有失真编码和无失真编码两大类。
有失真压缩法压缩了熵,会减少信息量,而损失的信息是不能再恢复的,因此这种压缩法是不可逆的。