名词
中文翻译：氧气
同义词：
['air', 'atmosphere', 'breathable 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 are responsible for delivering oxygen to the body.
肺部负责将氧气输送到身体。
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3. People who breathe heavily may need more oxygen during exercise.
在运动时呼吸急促的人可能需要更多的氧气。