This scenario would also apply to the situation of using irrigation waters from a farm dam to provide power because the water level, and therefore the Gross Head, would vary enormously.
这种情况也适用于使用情况从一个农场水坝提供灌溉用水的权力，因为水位，因此，在总团长，将大相径庭。
In the current surge of urbanisation and dam building, billions of tonnes of concrete have been poured onto farm fields and into rivers.
目前城市化进程汹涌、修筑水坝令数亿吨混凝土灌注到农场上、倾泻到江河里；
But dam by dam, mine by mine, farm by farm and city by city it is remaking the Earth before your eyes.
不过，一个个大坝，一片片矿山，一块块农田和一座座城市正在你眼前改造着地球。
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