要想让一个房间快速通风,应该是把风扇放在窗边,对着外面吹,还是对着里面吹? 知乎 Template




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tomski要想让一个房间快速通风,应该是把风扇放在窗边,对着外面吹,还是对着里面吹? 知乎 coloring