oxygen mask
英
美
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Noun:
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a breathing device that is placed over the mouth and nose; supplies oxygen from an attached storage tank
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用作名词 (n.)
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An oxygen mask will come down from overhead in case of emergency.
如果发生紧急情况,头顶上会放下一只氧气面罩。
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The car with its whirring air conditioning was like an oxygen mask.
配备了高功率空调的汽车就像一个氧气面罩。
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