"Sewage sludge" means sludge arising from urban effluent treatment plant and includes pretreatment waste, scourings and unstabilised sludge.
“下水道淤泥”，是指经城市污水处理厂产生的淤渣，包括预处理的废物、污垢和性质不稳定的淤泥。
A sewage treatment facility in central Japan has recorded a higher gold yield from sludge than can be found at some of the world's best mines.
一处位于中日本的污水处理厂发布消息说它能生产高于世界上一些顶级矿山产量的黄金。
These microbes are now being spread round the country in river water and in sewage sludge used on farms.
这些微生物正在全国的河水和农场的污泥中蔓延。
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