名词
中文翻译：氢
同义词：
['hydrogen', 'hydrogen atom']
例句：
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1. The hydrogen molecule is the simplest chemical compound.
氢分子是最简单的化学化合物。
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2. Hydrogen is a key component in many fuel cells.
氢是许多燃料电池的关键成分。
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3. In the process of combustion, hydrogen is converted into energy.
在燃烧过程中，氢被转化为能量。