Telltale smears of black sludge, the remnants of an oil spill, stain California's Huntington Beach.

海洋污染图片。警示涂片黑色污泥，残余漏油，染色加州的亨廷顿海滩。

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Photo Gallery: Polluted Oceans Telltale smears of black sludge, the remnants of an oil spill, stain California's Huntington Beach.

海洋污染图片。警示涂片黑色污泥，残余漏油，染色加州的亨廷顿海滩。

youdao

But after just 30 minutes of sifting through the garbage mountain, he struck lucky when he spotted a tiny glimmer surrounded by black sludge, wedged between two brown bags.

在垃圾堆里翻找了30分钟后，他非常幸运看到黑色淤渣里微微透出一丝闪光，戒指被夹在两只棕色袋子之间。

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When the company ceased operations in Ecuador, in 1992, it allegedly left behind hundreds of open pits full of malignant black sludge.

NEWYORKER: Reversal of Fortune

In October 2000 the floor of a 72-acre wastewater reservoir built above an abandoned mine in Kentucky collapsed, sending black sludge through the mine and out into a tributary of the Big Sandy River.

FORBES: Companies, People, Ideas

And building a pipeline to Turkey from Baku would be child's play compared with the Russian project, which involves laying the deepest undersea pipeline in the world, through the corrosive sludge of the Black Sea bed.

ECONOMIST: Of politics and pipelines