And sanitary or environmental engineering, which involves the study of water supply, purification, and sewer systems.

The sewer is choked up with rubbish.

下水道被垃圾堵住了.

And that means putting money in infrastructure, water and sewer.

这意味着投资基础设施 、 供水和排水系统等.

Sludge disposal facilities should be installed for the need of sewerage treatment.

同时配套建设完善污泥处置系统.

The pollutants that affect water come mainly from industries, farm, and sewerage systems.

水的污染源主要来自工业 、 农场以及排水系统.

Unfortunately, the sewerage was not the only issue.

不幸的是, 污水并不是唯一的问题.

Sewerage systems are either'separate'or'combined '.

排水系统有 “ 分流制 ” 和 “ 合流制”.

Ash and elm trees lined the streets , all of which had a sewerage system.

道路两旁种有青槐和榆树, 并有相当完整的排水系统.

The temporary sewerage pump was installed to pump the sewerage water drain to reduce the overflow.

当局已经安装临时的排污泵在该处以减少污水的溢出.

It is supposed to be washed down the gutter and into the city's vast sewerage system.

它应该是被沿排水沟冲入城市庞大的排水系统。

Where do the sewers discharge their contents?

阴沟的水流到哪里?

Much of the waste material is carried off in the sewers.

污物从下水道中排出.

The buildings are made of burnt brick, with an elaborate system of sewers and wells.

这些建筑物是用烧成的砖砌成的, 有着精心建造的下水道和水井.

Some say that our project near foul sewers, actually called artificial advantage.

有人说我们的项目临近臭水沟, 其实这叫水景优势.

The first sewers appeared in Rome around 700 B.C.

下水道则最早出现于西元前七百年的罗马.

The heavy rainfall backed up the sewers.

大雨堵塞下水道.

Down here in sewers, you will not find life so easy!

来到下水道里吧, 你就不会感到活着那么容易了!

She hired the sewing done.

她为缝好的衣服付了钱.

For a time we took in sewing to earn a little money.

有一段时间,我们接针线活做,来挣一点钱.

She did all the sewing by hand.

她用手工做了所有的缝纫工作.

I'd like to have a sewing room where I can make dresses for my dolls.

“我要一间能作洋娃娃衣服的缝纫间. ”