He polished his floor with a special chemical.

他用一种特殊的化学物质来擦亮地板。

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We decided to develop a special chemical plant.

我们决定办一个特别的化工厂。

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Then a special chemical was injected to make the tissues expand.

之后便注入一种特别的化学物质使组织扩张。

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To do so, the team encased the DNA in a special chemical cage before they encapsulated it.

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For that, aluminum tubes were inserted from the street and a special chemical solution was poured into the ground and cooled by a refrigeration plant.

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High temperatures can make transportation difficult and prove deeply uncomfortable for soldiers, especially if they have to wear special suits to protect themselves against chemical or biological weapons.

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