防毒通道 fáng dú tōng dào 🔊 protective passageway + Keep this word Meanings fáng dú tōng dào protective passageway Its characters 防fángto protectHSK 5毒dúpoisonHSK 6通tōngto go throughHSK 4道dàoroad; path (CL:條|条[tiao2],股[gu3])HSK 4