名词
中文翻译：纯氧
同义词：
['oxygen', 'pure oxygen']
例句：
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1.The patient needs to breathe pure oxygen for a while.
病人需要吸入纯氧一段时间。
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2. The researcher found that pure oxygen can improve the efficiency of the machine.
研究者发现纯氧可以提高机器的效率。
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3. During the race, athletes need to breathe pure oxygen to keep up with their competitors.
在比赛中，运动员需要吸入纯氧以保持与对手的竞争力。