Discharge pipes directly take pollutants away from the plant into the river.

排泄管道直接将污染物从工厂排入河流。

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The Volga River and the Ural River discharge into the Caspian Sea.

伏尔加河以及乌拉尔河都有流入里海。

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Two millimetres of rain in an hour can trigger a discharge; 39m tonnes of untreated sludge flushes into the river every year, says Thames Water, the utility firm that supplies London.

每小时两毫米的降雨都可能引发污水外泄。向伦敦供水的公用设施公司Thames Water表示，每年未经处理注入河水中的污泥达3900万吨。

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As it is, the food we export to China consumes around 41 trillion liters of water each year, or twice the discharge of the Colorado River, BCG says.

FORBES: How China Will Eat Your Lunch

The Environment Agency said that during periods of high tide, high river levels would be unable to discharge into the sea, which was likely to lead to localised flooding at Surfleet reservoir.

BBC: Cars stuck in floodwater

Last year 32m cubic metres of diluted sewage were dumped into the river, at a rate of roughly one discharge a week.

ECONOMIST: The capital's overflowing drains are due for a big upgrade