There should be greater treatment of sewage before it is discharged.

污水排放前应该进行更充分的处理。

《柯林斯英汉双解大词典》

When the Volt's battery pack is discharged, the 1.4-liter gas-powered four-cylinder engine kicks on to spin the 74-hp generator.

当沃蓝达的电池耗尽时，1.4升四缸燃气发动机就开工带动74马力的发电机。

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More than 30 million tons of waste rock are spread over the surrounding areas, and untreated water is discharged by the mines into the river.

超过3千万吨的废矿石遍布四周，未处理的水从矿井直接排入河中。

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The SHMI looks at deaths in hospital and up to 30 days after a patient is discharged.

BBC: Northern Lincolnshire hospitals' death rates still high

About 39 million tonnes of sewage is discharged into the river every year from 57 overflows, whenever there is heavy rainfall.

BBC: Thames Water bills rise to pay for Thames super sewer

The sludgy, salty sediment that's left is discharged back into the ocean.

NPR: California Town Votes on Huge Desalinization Plant