conducto de aire viciado
/kondˈukto ðe ˈaɪɾe βiθjˈaðo/
n
English: exhaust air duct · 排气管道
Significado：Conduit usually connected to a central ventilating station, which evacuates polluted or smoky air through openings along the tunnel.
English: exhaust air duct · 排气管道