Discharge of raw sewage into the sea is unsanitary and unsafe.

向大海里倾倒污水既不卫生也不安全。

《柯林斯英汉双解大词典》

The sea is coated with a film of raw sewage.

海上覆盖着薄薄一层未经处理的污水。

《柯林斯英汉双解大词典》

The raw sewage is chemically treated.

未经处理的污水要进行化学处理。

《牛津词典》

Other times the attacks are more personal:In 2000 a discontented consultant, rejected for a job at a water treatment plant in Australia, remotely hacked into a sewage treatment system and released 264, 000 gallons of raw sewage into rivers and parks.

FORBES: The Next Threat

In 1910 there was over 600 million gallons of raw sewage flowing into the harbor.

FORBES: Oysters Are Back In New York City Waters

Thames Water was fined in June for twice letting raw sewage seep into Sandford Brook, Abingdon.

BBC: Thames Water's ?3m Abingdon sewage works complete