water is composed of hydrogen and oxygen
水是由氢和氧组成的
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Water is composed of hydrogen and oxygen.
水由氢与氧化合而成。
《新英汉大辞典》
It is wide known that water is composed of hydrogen and oxygen.
众所周知，水是由氢和氧构成的。
youdao
The fact that water is composed of hydrogen and oxygen is undeniable.
合 而成这一事实是无可否认的。
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