And in Cleveland, the Cuyahoga River is cleaner than it's been in 100 years.

而在克利夫兰，凯霍加河100年来从未如此干净。

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On June 22, 1969, the Cuyahoga River in Cleveland, Ohio, caught fire, apparently after sparks from a train ignited a surface oil slick.

1969年6月22日，俄亥俄州克里夫兰的凯霍加河着了一场大火，表面上看是由于火车点燃地面的废油引起火星导致的。

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Doing so would leave the city braided with waterways, making it more pleasant and restoring a more natural water flow into the Cuyahoga River.

这样做可以让城市的水道编织起来，让人更愉快的是它还可以让水恢复自然状态，最后流入凯霍加河。

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Cleveland's Cuyahoga River caught on fire because of industrial wastes on the surface of the river.

VOA: special.2011.07.31

This was the Cuyahoga River in Cleveland,Ohio.

VOA: special.2010.04.21

Among the success stories the vice president pointed to was the cleanup of the Cuyahoga River in the Cleveland area.

CNN: AllPolitics - Gore Calls On Congress To Bolster Clean Water Act

Perhaps the most famous example is the Cuyahoga River, which was so covered with pollution and industrial waste that in 1969 it literally caught fire.

WHITEHOUSE: Blog Action Day: Protecting America��s Waters Today

In 1972 the Clean Water Act further broadened the law, as Congress became concerned about pollution and water quality, spurred by high-profile incidents such as the Cuyahoga River catching fire in 1969.

WSJ: Federal Offenses: Sewage Blunder Earns Building Engineer a Criminal Record