名词
中文翻译：Unknown
同义词：
['oxygen', 'oxygen layer', 'oxygen supply']
例句：
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1. The air in the room was very thin, making it difficult for us to breathe.
房间里的空气很稀薄，我们很难呼吸。
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2. The oxygen levels in the atmosphere are critical for plant growth.
大气中的氧气水平对植物生长至关重要。
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3. The oxygen supply is essential for maintaining a healthy body.
氧气供应对于保持健康的身体至关重要。