gas mask

名词 gas mask:

1. a protective mask with a filter; protects the face and lungs against poisonous gases
   同义词：gasmask, respirator, gas helmet

1. The part of a gas mask that contains the filter for removing toxic agents from the air.
   滤毒罐防毒面具的一部分，含有过滤装置，能将有毒成分从空气中除去