名词
中文翻译：呼吸器
同义词：
['mask', 'respirator mask例句：1. The firefighters wore respirators to protect themselves from the smoke.（消防员们戴着口罩保护自己免受烟雾的侵害。）2. He was wearing a respirator when he entered the laboratory.（他进入实验室时戴着口罩。）']
例句：
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1. The firefighters wore respirators to protect themselves from the smoke.
消防员们戴着口罩保护自己免受烟雾的侵害。
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2. He was wearing a respirator when he entered the laboratory.
他进入实验室时戴着口罩。
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3. The doctor advised everyone to wear a respirator when they went outside.
医生建议每个人外出时都戴上口罩。