科技英语翻译的基本方法和技巧,,,Of visible lights, red light has the longest and violet the shortest wavelength. Humans have been dreaming of copies of themselves for thousands of years. It’s believed that we shall make full use of the sun’s energy some day. The changes in matter around us are of two types, physical and chemical.在各种可见光中，红光的波长最长，紫光的波长最短 千百年来，人类一直梦想制造出自己的复制品 我们相信，总有一天我们将能够充分利用太阳能 我们周围的物质变化有两种，物理变化与化学变化增词,所谓增词译法，就是在翻译时按意义上（或修辞上）和句法上的需要增加一些词来更忠实、通顺地表达原文的思想内容这种增词不是无中生有地随意增词，而是增加原文中无其形但有其意得词1.用增词法表达出原文的复数概念。
Carbon combines with oxygen to form carbon oxides. 碳同氧化合形成多种氧化碳When the plants died and decayed, they formed layers of organic materials. 植物腐烂后，形成了一层层有机物 There is enough coal to meet the world’s needs for centuries to come. 有足够的煤来满足全世界未来几个世纪的需要 Amphibians and birds do differ significantly. 两栖类和鸟类之间有显著差别In the 1980s, departments bought their own minicomputers and managers bought their PCs. 20世纪80年代，许多部门都购买了自己的微机，经理们也购买个人电脑 Signals from the senses --- eyes, ears, nostrils or skin, as the case may be --- send messages to the spinal cord, which moves the limbs appropriately. 眼、耳、鼻或皮肤等各种感官所接受的信号会被送到脊髓，使肢体活动。
Things in the universe are changing all the time. 宇宙中万物总是在不断变化的 The substances get into the soil, into plants and into human bodies. 这些物质进入土壤、植物和人体 Air is a mixture of gases. 空气是多种气体的混合物2.增加表示时态的词语Contemporary natural science are now working for new important breakthroughs. 当代自然科学正在酝酿着新的重大突破 The high-altitude plane was and still is a remarkable bird. 高空飞机过去是而且现在仍然还是一种了不起的飞行器 By the turn of the 19th century geologist had found that rock layers occurred in a definite order. 到19世纪初，地质学家已发现岩层有一定的次序。
Some day man will be able to utilize the solar energy. 总有一天，人类将能利用太阳能This natural approach to remediating hazardous wastes in the soil, water, and air is capturing the attention of government regulators, industries, landowners and researchers. 这种清除土壤、水以及空气中有害废品的自然方法正日益受到各政府首脑、企业、土地所有者、研究人员们的关注 It’s time to ring farewell to the century of physics and ring in the century of biotechnology. 现在是告别物理学世纪、迎接生物技术世纪的时候了 This company has been manufacturing computers for five years. 这家公司五年来一直在生产计算机 The earth’s population is doubling, the environment is being damaged. 地球的人口正在加倍增长，环境也在不断受到破坏。
Scientists are working to develop new ways to make the semi-conducting material used in computers and other modern electronic devices. 科学家们正在用新的方法制造用于计算机和其他现代电子仪器中的半导体材料3. 增加表示句子主语的词语Weak magnetic fields are known to come from the human body. 我们知道，人体能产生微弱的磁场 It is estimated that the new synergy between computers and Net technology will have significant influence on the industry of the future. 有人预测，新的电脑和网络技术的结合将会对未来工业产生巨大的影响 With the development of modern electrical engineering, power can be transmitted to wherever it is needed. 随着现代化电气工程的发展，人们可以把电力输送到任何所需要的地方。
It is said that numerical control is the operation of machine tools by numbers. 人们说，数控就是机床用数字加以操纵It’s pointed out that societies have long operated under the assumption that the oceans and rivers would wash away pollution, the winds would cleanse the air, and the soil could bury the rest. 有人指出，我们的社会长期以来在处理垃圾时都认为海洋和河流会把污染冲走，风会把空气吹净，而土壤则会把其他污染埋藏 Potassium and sodium are seldom met in their natural state. 我们很少见到自然状态的钾和钠 The design is considered practical. 大家认为这一设计切实可行 A few years ago it was thought unusual that programs could ever be called up by viewers to be displayed on their TV screens at home. 几年前人们还认为观众在家里打收看电视节目是件稀罕事。
It may be supposed that originally the earth’s land surface was composed of rock only. 我们可以设想地球陆地表面原先完全是由岩石构成的4. 增加原文中省略的词语You have seen how water expands when it is heated and contracts when it is cooled. 你已经看到水受热时怎样膨胀，冷却时有怎样收缩High voltage is necessary for long transmission line while low voltage for safe use. 远距离输电需要高压，安全用电需要低压 The sun is regarded as the chief source of heat and light. 太阳被认为是主要的热源和光源 High temperatures and pressures changed the organic materials into coal, petroleum and natural gas. 高温和高压把这些有机物变成了煤、石油和天然气。
Plastic bowls marked microwavable are probably safer than those that aren’t. 使用贴有“可用于微波炉烹调”标志的塑料碗也许比使用没有贴这种标志的塑料碗更安全 Under no circumstances can more work be got out of a machine than is put into it. 机器输出功决不能大于输入功 Matter can be changed into energy and energy into matter. 物质可以转化为能，能也可以转化为物质 This experimental result is in inverse ratio to that. 这项实验结果和那项实验结果成反比 Carbon steels are classified as low, medium, and high carbon steels. 碳钢可分为低碳钢、中碳钢和高碳钢5. 增加具体化、明确化的词语The statistics brought out a gender division between hard and soft science: girls tending toward biology, boys tending maths and physics. 统计表明，从事硬科学和软科学研究的科学家在性别上存在差别：女性倾向于生物学的研究，而男性则倾向于数学和物理学的研究。
Were there no electric pressure in a conductor, the electron flow would not take place in it. 导体内如果没有电压，便不会产生电子流动现象 Net is best suited for small and medium enterprises to band together and break the monopolies of the “giants”. 网络是中小型企业共同合作打破“霸主”垄断的最好工具 This is the first step toward the solution of air pollution. 这是解决空气污染问题的第一步 Floppy disks have always been cheap to make and relatively easy to copy. 软盘制作成本比较低，而且也比较容易拷贝。