Nutrients from sewage and agricultural fertilizers also help algae grow .

污水和农业肥料中的营养也可以导致海藻大规模增长。

Untreated sewage and mercury-contaminated sludge continue to be dumped haphazardly .

不经处理的污水，被水银污染的泥土不断的随意扔弃。

The japanese researchers isolated proteins from bacteria in sewage .

日本研究者从下水道污物中分离出蛋白质。

Steve and I lay down and crawled through the raw sewage .

我和斯蒂夫不得不躺下身子，在未经处理的污水中匍匐前进。

Quite small things such as smarter farming and better sewage treatment could help a lot .

其实一些小举措比如更合理的农作和合理的污水处理就能改善很多。