犀牛角可用于制造药物和刀柄，需求量很大。

Rhinoceros horns are in great demand for use in medicines and as tops for knives.

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因此，医生须在制造药物之前找出在某一癌症中起关键作用的分子途径。

You therefore have to find out which pathway is crucial in a cancer before you can make the drug.

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遗传学改良的生物体已被用于制造药物和其它制品，但对生物体的DNA部分改动甚少。

Genetically modified organisms are already used to manufacture drugs and other products, but they're produced by changing only small sections of DNA.

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But in terms of drugs that don't look like maybe this compound was used in the synthesis, many of them might have used thionyl chloride, because it generates such a nice reactive intermediate that you can go on and make a bunch of different compounds from that intermediate.

但是对于药物来说,它们可能跟合成过程中用到的这种化合物并不相像，很多药物的制造过程中都会用到亚硫酰氯，因为它能产生活性如此之高的反应中间体,以至于你可以继续利用反应中间体,来制造一堆不同类型的化合物。

麻省理工公开课 - 化学原理课程节选