名词
中文翻译：氧气
同义词：
['air', 'oxygen', 'gas']
例句：
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1.Oxygen is essential for life on Earth.
氧气是地球上生命所必需的。
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2. The lungs need a certain amount of oxygen to function properly.
肺部需要一定量的氧气才能正常运作。
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3. Oxygen is used in various industries as a fuel source.
氧气被用于各种工业作为燃料来源。