空气流通 Traditional 空氣流通 kōng qì liú tōng 🔊 ventilation; air circulation + Keep this word Meanings kōng qì liú tōng 空氣流通 ventilation; air circulation Its characters 空kōngemptyHSK 4气qìgas; airHSK 4流liúto flowHSK 4通tōngto go throughHSK 4