waste matter such as water or human urine or solid waste

Some cities in the world do not have proper facilities for the disposal of sewage. 世界上的某些城市没有合理的污水处理设施。

Raw/untreated sewage is being pumped into the sea, from where it pollutes our beaches. 未经处理的污水被排入大海，污染了我们的海滩。

the system of carrying away waste water and human waste from houses and other buildings through large underground pipes or passages