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、ZINWA has pledged to correct the water supply and sewage system as a matter of urgency.
津巴布韋國家水管理局保證作為當(dāng)務(wù)之急改善水供應(yīng)和污水處理系統(tǒng)。

3、Those chemicals pass through the sewage system and might even end up in our drinking water.
這些化學(xué)品將穿越污水系統(tǒng)，并可能最終進(jìn)入我們的飲用水中。

sewage system翻譯