名词
中文翻译：氢循环
同义词：
['hydrogen cycle', 'water cycle']
例句：
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1.The hydrogen cycle is a crucial component of the Earth's life support system.
氢循环是地球生命支持系统的关键组成部分。
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2.The study of the hydrogen cycle helps us understand how energy is produced and distributed in our planet.
研究氢循环有助于我们理解地球上能量的产生和分配方式。
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3. In the hydrogen cycle, hydrogen gas is converted into water vapor through a series of chemical reactions.
在氢循环中，氢气通过一系列化学反应转化为水蒸气。