It is suggested to reduce potential negative impact brought by engineering structures as much as possible. Sand release in river courses should be one of the key factors that must be considered.

今后在河道整治的同时，尽可能消除工程可能带来的负面影响，考虑河道的输沙要求应该成为河道整治必须考虑的重要因素。

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Trees and other vegetation manage to survive thanks to fungi that release nutrients from the sand.

多亏真菌从沙子中释放出营养，才使树木和其它植被生存下来。

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Fracking involves pumping water, chemicals and sand underground at high pressure in order to release gas.

液压破碎法是利用高压将水、化学物质和沙打到地下以获取天然气的方法。

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If approved the quarry would release five million tonnes of new sand and gravel reserves.

BBC: Ducklington's Gill Mill quarry expansion planned

About 25, 000 wells a year are being fracked, a process in which water, chemicals and sand are injected at high pressure underground to release trapped natural gas.

NPR: Report: Flaws In EPA Drilling Pollution Data

Fracking involves drilling horizontally into the rock, forcing sand and water underground to cause tiny fractures that release gas from the shale.

BBC: NI shale gas deposits 'could be worth ?80bn' says report