Discharge of raw sewage into the sea is unsanitary and unsafe.(向大海里傾倒污水既不衛生也不安全。)

The SV-pumps are equipped with Vortex impellers, undoubtedly the best non-clog impellers ever invented for the handling of mud, raw sewage, viscous liquids, rags, wood chips and other solids.(泵配有旋渦葉輪，是最好的無堵塞葉輪，用于進行泥漿，未經處理的污水，粘稠液體，破布，木屑和其他固體。)

Over 265 billion gallons of raw sewage are dumped into the Yangtze annually. Currently the river flushes this downstream and out into the ocean.(每年，超過2650億加侖（10億立方米）未經處理的污水流入長江，經過下游并最終流入大海。)

The experiments show that the layer height, the particle size of zeolite, the quality of the raw sewage and the flow velocity are the main influence factors.(實驗結果表明：影響改性沸石除銨的主要因素是改性沸石層的裝填高度、改性沸石粒徑大小、原水水質、流速等。)

The raw sewage is chemically treated.(未經處理的污水要進行化學處理。)

These cities collect stormwater and sewage in the same pipes, which means that when sewers are overwhelmed, raw sewage floods directly into rivers and streams.(在這些城市，雨水和生活污水由相同的排水系統排放，意味著當下水道水量過大，未經處理的污水會直接涌向河流和溪流。)

In 1858 the stench of raw sewage got so bad that Parliament, which meets in a riverside building, had to be dissolved.(1858年，未經處理的污水所發出的惡臭，迫使在河邊大樓開會的英國國會提早休會。)

Residents here are very worried about cholera reaching their area because raw sewage has been overflowing from manholes all over the place.(這里的居民十分擔心霍亂到達他們這里，因為大家可以看到，臟水已經從下水口里溢出，弄得到處都是。)

In order to improve the efficiency and quality of sewage treatment, and save manpower and raw materials, designing an automatic monitoring system is very necessary.(為了提高污水處理的效率和質量，同時節省大量的人力和物力，設計一套自動化監控系統是十分必要的。)

The bricks in Vault201 were made from 100 percent recycled material—including industrial waste and raw sewage.(拱頂201使用的磚，完全由可回用材料制成，包括工業廢料和廢水。)