an underground pipe that is used to carry sewage away from houses, factories, etc. 污水管;下水道;阴沟 a sewer pipe/system 下水道/系统 an open sewer (= a channel on the surface of the ground that is used to carry sewage) 排污明沟
Extra ExamplesTopics Buildingsc1Much of the water runs away down the sewers. 许多水顺着下水道流走。 A network of sewer tunnels runs underneath the prison. 监狱下面有一个下水道网络。
Oxford Collocations DictionarySewer is used before these nouns:- line
- rat
- tunnel
- …
Word OriginMiddle English (denoting a watercourse to drain marshy land): from Old Northern French seuwiere ‘channel to drain the overflow from a fish pond’, based on Latin ex- ‘out of’ + aqua ‘water’.