如果你是一个烟民，沿着一条街道走，你可能会在窗户或门上看到五六个这样的标识。
If you're a smoker walking down a street you're likely to pass five or six of these signs in Windows or on doors.
如果你是一个烟民，沿着一条街道走，你可能会在窗户或门上看到五六个这样的标识。
If you're a smoker walking down a street you're likely to pass five or six of these signs in Windows or on doors.
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