"Water is made up of hydrogen and oxygen?

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"Waterismadeupofhydrogenandoxygen?"Waterismadeupofhydrogenandoxygen?"Waterismadeupofhydrogenandoxyge

"Water is made up of hydrogen and oxygen?
"Water is made up of hydrogen and oxygen?

"Water is made up of hydrogen and oxygen?
水是由氢元素和氧元素组成

水是由氢和氧构成的。

水是由氢和氧构成的。