Question

下流下流[xià liú]1.■ （下游） lower reaches (of a river):长江下流the lower reaches of the Changjiang River2.■ （卑鄙龌龊） low-down; mean; off colour; near the bone; obscene; dirty:下流的勾当base acts; low-down behaviour [tricks];下流的谩骂scurrilous attacks; coarse invectives;下流的玩笑dirty jests; obscene jests; coarse jokes;说下流话talk dirt;写下流作品write dirt;他说的笑话很下流。The jokes he told were quite off colour.

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常用词组1.■下流管 down-pipe;2.■下流话 obscene [dirty; foul] language; obscenities;3.■下流量 down-off;4.■下流音乐厅 free-and-easy