a protective mask with a filter; protects the face and lungs against poisonous gases 同义词:gasmask, gas helmet,
a breathing device for administering long-term artificial respiration 同义词:inhalator,
百科解释
A respirator is a device designed to protect the wearer from inhaling harmful dusts, fumes, vapors, or gases. Respirators come in a wide range of types and sizes used by the military, private industry, and the public.