名詞 sewage system:

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

1. The grave problem of public hygiene is connected with the inefficient sewage system of the city.
   公共衛(wèi)生方面的嚴(yán)重問題與該城低效率的污水處理系統(tǒng)有關(guān)。
2. Chemicals in the factory's sewage system have changed the ecology of the whole area.
   這座工廠排出的化學(xué)物質(zhì)改變了整個地區(qū)的生態(tài)。