sewage 下水道中的污物;秽水;脏水
sewage system 污水处理系统
生活污水 domestic sewage
污水管 sewage pipe
污水管道 sewage conduit
这是幅污水处理的工艺流程图.
This is a drawing of the technological process of sewage processing
金水河的秽水近两年得到了有效的治理.
The sewage in Jinshui River has been under effective control in recent years.