1、When he left office, we had a sewer system and my babies wasn't sick anymore.
不過等到他下臺的時候，我們已經(jīng)有了下水道，我們的孩子也不再生病了。

2、When he left office, we had a sewer system and my babies wasn’t sick anymore.
不過等到他下臺的時候，我們已經(jīng)有了下水道，我們的孩子也不再生病了。

3、Before you know it, the the city water and sewer system will stop working.
你知道它之前，城市供水和污水處理系統(tǒng)將停止工作。

4、This dissertation is to develop a late-model sewer system named vacuum sewer system.
本文旨在開發(fā)一套新型真空下水道系統(tǒng)。

5、One of the latest casualties is the sewer system of Jefferson county, Alabama.
最近的一個受害者是阿拉巴馬州杰弗遜縣的下水道系統(tǒng)。