废气
fèi​qì

waste gas

fèi​qì waste gas
  1. 废 廢 fèi noun
    useless
    (bound form) having lost original function or value; waste; discarded; superfluous
  2. 气 氣 qì noun
    gas
    gas; air; the state of matter that is neither liquid nor solid

fèi​qì exhaled air
  1. 废 廢 fèi noun
    useless
    (bound form) having lost original function or value; waste; discarded; superfluous
  2. 气 氣 qì noun
    breath
    breath; respiration; the air inhaled and exhaled by living things