ventilation

剑桥词典

the movement of fresh air around a closed space , or the system that does this
通风（设备）；空气流通（设备）
Her room had poor ventilation and in summer it became unbearably stuffy . 她的房间通风非常不好，到了夏天就闷得要命。
a ventilation system 通风系统 返回 ventilation