词汇：ventilation

n. 空气流通；通风设备

相关场景

He looks around, not for anything in particular. His look catches on something low, just in front of him: A ventilation duct near the baseboard. Its opening is exposed; its grille lies on the floor before it.
>> 老无所依No Country for Old Men Movie Script
The hallway is white wallboard, doors opening off it at long intervals. Chigurh stands still and listens. Nothing but the hum of ventilation.
>> 老无所依No Country for Old Men Movie Script