N-COUNT A drainpipe is a pipe attached to the side of a building, through which rainwater flows from the roof into a drain. 排水管
He evaded police by climbing through a window and shinning down a drainpipe.
他翻窗从排水管爬下,从而躲过了警察。
N-COUNT A drainpipe is a pipe through which liquid waste is removed from a building. 排污管
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