英语科技翻译

A few instruments are in a state of neglect. 一些仪器处于无人管理的状态。 It is anything but a high precision grinder. 这决不是一台高度精密磨床。 Far from increasing the reaction rate, high temperatures decrease it. 高温不但没有增加该反应速率，反而减低反应速率。 They would rather use machine parts of plastics than those of metals. 他们宁可使用塑料机器零件，也不用金属机器零件。 We should do our best to protect the surrounding areas from being polluted by radiation. 我们应尽力使周围环境免受辐射污染。
双重否定
Sodium is never found uncombined in nature. 自然界中从未发现不处于化合状态的钠。（自然界中的钠被 发现都处于化合状态。） It is not impossible to control industrial waste waters to preserve the usefulness of the receiving water. 不是不可能控制工业废水以保护进水的可用性。（完全可以 控制工业废水以保护进水的可用性。） There has not been a scientist of eminence but was a man of industry. 没有哪一个有成就的科学家不是勤奋的。（所有有成就的科 学家都非常勤奋。）
试译下列各句，注意全部否定的译法： Neutrons carry no charge. Rubber does not conduct electricity. A proton has a positive charge and an electron a negative charge, but a neutron has neither. These calculations are not correct. A semiconductor is a material that is neither a good conductor nor a good insulator.
Physiologic process cannot take place if there is not sufficient water. A body at rest will never move unless it is acted on by an external force.
意义上的肯定：nothing like（没有什么比得上…）, cannot…too 意义上的肯定： （越…越好）, no/not/nothing + more + than（不过）, 越好） 不过） no/not/nothing + less + than（多达） 多达）
There is nothing like mineral water to quench one’s thirst. 矿泉水是最解渴的饮料。 Pesticides can cause a lot of harm, so you can never be too careful when using pesticides. 杀虫剂会造成很大危害，所以当使用杀虫剂时应特别小心。 These scientists could not believe the Curies more. 这些科学家完全相信居里夫妇。 No less than 25 percent of the crops are polluted. 受污染的庄稼竟高达25%。 受污染的庄稼竟高达25%。 The importance of proper lubrication cannot be overemphasized. 应特别强调适当进行润滑的重要性。
试译下列各句，注意双重否定的译法： One body never exerts a force upon another without the second reacting against the first. It is impossible for heat certain energy without something lost.
含蓄否定
表达含蓄否定的动词和动词短语：avoid, 表达含蓄否定的动词和动词短语：avoid, deny, exclude, fail, ignore, lack, miss, neglect, overlook, keep/prevent/protect/save…from, refuse, stop 表达含蓄否定的名词：absence, 表达含蓄否定的名词：absence, deficiency, exclusion, failure, loss, neglect, refusal 表达含蓄否定的形容词和形容词短语：devoid 表达含蓄否定的形容词和形容词短语：devoid of, far from, few, free from, ignorant of, last, little, safe from, short of 表达含蓄否定的副词：hardly, 表达含蓄否定的副词：hardly, rarely, scarcely, seldom, vainly 表达含蓄否定的介词及介词短语：above, 表达含蓄否定的介词及介词短语：above, at issue with, behind, below, beneath, beside, beyond, but for, in default of, in defect of, in place of, in vain, instead of, off 表达含蓄否定的连词：before, 表达含蓄否定的连词：before, but, but that, rather than, too…to…, unless
The robot seldom if ever tires or losses interest in its task. 机器人对于所承担的工作简直不会感到疲劳或厌倦。 It is the last type of machine for such a job. 这是最不适合这种作业的机器。 Oil is being found in parts of the world which were once pronounced lacking in oil. 在世界上一些曾被宣告为贫油的地区，正在发现石油。 A vacuum, which is the absence of matter, cannot transmit sound. 真空中没有物质，不能传播声音。 Beyond a certain point the piling up of evidence adds mere quantity, without altering the result. 超出某一程度，再积累资料只是增加数量，而不会改变结果。
部分否定：all, every, both, always + not 部分否定：
All these metals are not good conductors. 这些金属并不都是良导体。 Every color is not reflected. 并非每种色光都会反射回来。 Friction is not always useless, in certain cases it becomes a helpful necessity. 摩擦并非总是无用的，在某些场合下，则是有益和必需的。 Notice that not all mechanical energy is kinetic energy. 要注意，并非所有的机械能都是动能。 Both the instruments are not precision ones. 这两台仪器不都是非常精密。 In a thermal power plant, all the chemical energy of the fuel is not converted into heat. 在火力发电厂里，燃料的化学能并未全部转化为热能。
否定句的翻译
全部否定 部分否定 双重否定 意义上的肯定 含蓄否定 转移否定
全部否定 : not, no, never, none, neither…nor, nothing, nobody,
nowhere Whether any of this causes immediate harm is not known. 这是否会造成直接危害目前还不得而知。 Never is aluminum found free in nature. 铝在自然界从不以游离状态存在。 At the beginning, it is said, there was literally nothing, not even space. 据说，在最初的时候，可以说什么东西也没有，甚至连空间也没 有。 Nobody wants a dump, or an incinerator, next door. 谁都不愿意在自己的家门口有个垃圾场或垃圾焚化炉。 A gas has neither definite volume nor definite shape. 气体既无一定体积，又无一定形状。 Carbon dioxide does not burn, neither does it support burning. 二氧化碳既不自燃，也不助燃。
A radar screen is not unlike a television screen. 雷达荧光屏跟电视荧光屏没什么不一样。（雷达荧光屏跟电 视荧光屏一样。） No flow of water occurs unless there is a difference in pressure. 没有压差，水就不会流动。（有压差，水才会流动。） Though often beneficial, mindless use of antibiotics is not without hazard. 使用抗生素虽然非常有好处，但如果盲目使用，就难免没有 害。（使用抗生素虽然非常有好处，但如果盲目使用，也会 有害。）
试译下列各句，注意部分否定的译法： Every machine here is not imported from abroad. In the thermal power plant, all the chemical energy of the fuel is not converted into heat. Not every collision results in a chemical reaction, since many molecules do not possess the required energy. But friction is not always useless, in certain cases it becomes a helpful necessity. Both of the substances do not dissolve in water.
试译下列各句，注意意义上肯定的译法： An explosion is nothing more than a tremendously rapid burning. No less than 150 people were injured in the crash. It cannot be too much emphasized that agriculture is the foundation of the national economy. That scientist has no small chance of success. Some oil wells produce nothing but salt water, while others always remain dry.