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单词
oxygen mask
释义
oxygen mask
Word forms:
plural
oxygen masks
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氧气面具;氧气罩
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.
氧气面具;氧气罩
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oxygen mask
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firm up
firmup
firmware
firmwares
firry
firs
-first
first
first
first-aid
first aid
firstaid
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first-aiders
First-Amendment
First Amendment
FirstAmendment
first and foremost
first-born
first born
firstborn
firstborns
first call on
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first-class
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更新时间:2026/5/23 13:42:27