Hydrogen combines with oxygen to form water.

氢与氧化合成水。

《牛津词典》

Hydrogen and oxygen combine to form water.

氢与氧化合成水。

《牛津词典》

Two atoms of hydrogen combine with one atom of oxygen to form a molecule of water.

两个氢原子和一个氧原子结合组成一个水分子。

《牛津词典》

It contains forms of hydrogen and oxygen that can mark, or label, these elements within body water.

VOA: special.2011.07.27

If we take hydrogen peroxide in the liquid state, it can break down to form water and oxygen.

如果我们有一些液态的过氧化氢，它会分解成水和氧气。

麻省理工公开课 - 热力学与动力学课程节选

You burn methane, and it combines with oxygen to form water, to form CO2.

燃烧酒精，酒精分子和氧气结合形成水和二氧化碳。

麻省理工公开课 - 热力学与动力学课程节选

Carbon dioxide emissions decrease the amount of available oxygen in water in two ways.

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And this would only happen if the Soyuz rockets are not returned to flight before critical supplies of oxygen, water and food run low.

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Oxygen, water's other chemical constituent, is common in rocks.

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