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词汇
medical masks
释义
medical masks
基本
例句
医用口罩
Many medical facemasks, not approved as respirators, do not seal tightly to the face allowing airborne hazards to enter the breathing zone.
许多没有被批准作为呼吸防护口罩的医用口罩，不能与面部密合，空气污染物会直接进入呼吸道。
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更新时间：2025/5/29 1:49:45