sewage system

名词 sewage system:

1. facility consisting of a system of sewers for carrying off liquid and solid sewage
   同义词：sewer system, sewage works

1. The grave problem of public hygiene is connected with the inefficient sewage system of the city.
   公共卫生方面的严重问题与该城低效率的污水处理系统有关。
2. Chemicals in the factory's sewage system have changed the ecology of the whole area.
   这座工厂排出的化学物质改变了整个地区的生态。