加氫

Water contains hydrogen and oxygen. 水含有氫和氧。

Water is composed of hydrogen and oxygen. 水由氫和氧組成。

Water is composed of the elements hydrogen and oxygen. 水是由氫元素和氧元素組成的。

Water may be resolved into hydrogen and oxygen. 水可以分解為氫和氧。

The hydrogen is the known the lightest element. 氫是已知的最輕的元素。

Hydrogen and oxygen combine/Hydrogen combines with oxygen to form water. 氫與氧化合成水。