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oxygen mask英英字典_oxygen mask剑桥英语解释_oxygen mask柯林斯英文解释_食材铺反向词典

oxygen mask

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柯林斯词典

oxygen mask (oxygen masks)

1. N-COUNT An oxygen mask is a device that is connected to a cylinder of oxygen by means of a tube. It is placed over the nose and mouth of someone who is having difficulty in breathing in order to help them breathe more easily. 氧气面罩

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