Police say rescue officials are worried that water from a choked river could inundate towns near the epicenter.

警方称救援人员担心堵塞的河流一旦决堤将会淹没震中附近地区的乡镇。

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He took up the postcard Mrs Qin had sent him. On it was a picture of an ice-choked river: the Heilongjiang during the spring thaw.

他拿起秦老师写来的明信片，那明信片正面印着一条浮冰拥塞的大河。那是解冻时节的黑龙江。

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One year before the first Earth Day, our Nation watched in horror as the polluted and debris-choked Cuyahoga River in Cleveland, Ohio, caught fire.

在第一个地球日的前一年，我们的国家惊恐地看到俄亥俄州克里夫兰市(Cleveland, Ohio)污染严重、垃圾充斥的凯霍加河(Cuyahoga River)燃起大火。

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The city's sewage system was so overwhelmed that human waste, sent straight into the water around New York, decayed on the river floor and choked out most life.

WSJ: You Can't Get Seasick on a Park Bench