名词
中文翻译：分子
同义词：
['substance', 'particle']
例句：
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1. The molecule of water is made up of two hydrogen atoms and one oxygen atom.
水的分子由两个氢原子和一个氧原子组成。
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2. The molecule of a gas is the smallest unit that can be divided into smaller units.
气体的分子是最小的单位，可以分成更小的单位。
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3. The molecule of carbon dioxide is composed of two oxygen atoms and four carbon atoms.
二氧化碳的分子由两个氧原子和四个碳原子组成。