你看，原来某些微生物是化学合成的——它们不需要阳光，因为它们从化学反应中获取能量。

You see, it turns out that certain microorganisms are chemosynthetic—they don't need sunlight because they take their energy from chemical reactions.

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而细菌呢，有点像通过化学合成的方式来为管虫提供食物，记得之前讲过的化学作用吧。

The bacteria, well the bacteria kind of feed the tubeworms through chemosynthesis, remember, that chemical reaction I described earlier.

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环氧树脂是化学合成的树脂，它由含环氧基的化合物反应而成。

Epoxy are synthetic resins formed by reactions of compounds containing epoxy groups.

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These are things that must be taken in from the environment because your body cannot manufacture them and they promote specific chemical reactions in the body.

这些都是必须从外界摄取的物质,因为无法通过自身合成,它们能促进体内特定的化学反应

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

So if you're trying to make a more complicated organic molecule carbon-carbon bonds are one of the most difficult things to make in organic chemistry, and it turns out that c n minus is a very reactive molecule, so it's a good way, even though we'll go over some drawbacks in a second, it is a good way to make carbon-carbon bonds.

如果你要合成一个更复杂的有机分子,碳碳键是有机化学中,最难制造的键之一，而实际上氰离子是一种具有很高活性的分子，用它是一个好办法，尽管我们一会儿将看到它的一些缺点，但它的确是一个制造碳碳键的好方法。

麻省理工公开课 - 化学原理课程节选