These devices then combine hydrogen and oxygen to make water and liberate electricity in the process.

然后这些装置将氢和氧合成水，并在这个过程中释放电力。

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Hydrogen and oxygen combine to form water.

氢与氧化合成水。

《牛津词典》

When you burn a hydrocarbon fuel such as oil, its hydrogen and carbon atoms combine with oxygen from the atmosphere to create water and carbon dioxide.

当你在烧氢类燃料(如石油)时，燃料中的氢原子和碳原子与空气中的氧结合反应，生成了二氧化碳和水。

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It has found ways to reduce the amount of platinum and other exotic metals needed to combine hydrogen and oxygen.

ECONOMIST: Cars