John works in a chemical works.

约翰在一家化工厂工作。

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A chemical works is near our school.

我们学校附近有家化工厂。

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There lies a chemical works by the river.

河边有一座化工厂。

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We talked about the structure of DNA, how it works in terms of a physical chemical model of the DNA molecules.

上节课我们讲了DNA的结构,从理化模型的角度讲了,DNA分子是如何工作的

耶鲁公开课 - 生物医学工程探索课程节选

DDT, a once-controversial chemical that works safely against malaria when sprayed inside dwellings.

ECONOMIST: America and malaria

With a mixture of entities, it is much harder to pinpoint exactly how a drug works, as the chemical structure may be extremely complex.

FORBES: Magazine Article

Nicotine works by stimulating the production of a chemical called dopamine.

ECONOMIST: Great drug, shame about the delivery system | The