downspout
/ˈdaʊnspaʊt/
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A downspout is a pipe attached to the side of a building, through which rainwater flows from the roof into a drain. 排水管
noun [具体名词] 水落管，落水管（将雨水从屋顶排至水沟）
He installed rain gutters and downspouts. 他安装了雨水槽和排水管。
