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TOEFL BNC: 7996 COCA: 9805

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

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