人类还通过给沼泽地排水、凿石劈山、修建公路和铁路等方式，改变了地球的面貌。
Man has also modified the face of the earth by draining marshes and cutting through mountains to build roads and railways.
通过大家所知的栖息地银行，如果开发商导致沼泽地枯竭，他要能支付得起在另外一个地方修复比之前更大的沼泽地。
Through habitat banking, as this is known, a developer who drains a hectare of marshland can pay to restore a bigger area elsewhere.
在沼泽地里，地表水会通过土壤慢慢地渗透到下面的岩层里。
In a marsh, the surface water can sink slowly down through the soil into the rock below.
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