| 单词 | 氧气罩 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔mask〕A covering for the nose and mouth that is used for inhaling oxygen or an anesthetic.氧气罩、麻醉罩：用于为嘴或鼻子吸入氧气或麻醉的覆盖物美国传统If the cabin depressurizes (= If the air pressure within it becomes lower), oxygen masks will automatically drop down.如果机舱内气压减小，氧气罩将会自动放下。剑桥国际 |
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