名词
中文翻译：氧气面罩
同义词：
['oxygen mask', 'oxygen masking']
例句：
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1.The firefighters used oxygen masks to protect themselves from the toxic gases.
消防员使用氧气面具保护自己免受有毒气体的伤害。
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2. During the operation, they had to wear oxygen masks to prevent the risk of asphyxiation.
在手术过程中，他们必须戴上氧气面具以防止窒息的风险。
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3.The patient was given an oxygen mask to help him breathe during the emergency.
病人被给予氧气面具，以帮助他在紧急情况下呼吸。