Surface water-mostly rivers, lakes and reservoirs-will not flow from one basin into another without artificial diversion, and usually only with pumping.
包括主要由河流、湖泊、和水库组成的地表水必须要通过人工引流才能从一个盆地进入另一个盆地，很多时候能够依赖的技术只有水泵。
The women get up in the middle of the night to walk 2km to the nearest pumping station, where someone has removed a couple of brick from the base to allow a steady flow of water to pour out.
妇女们半夜起床，走2公里的路到最近的抽水站取水，在水井底部两块砖头被拿走了，因此有源源不断的水流冒出来。
When the tunnel is driven through stiff clay, the flow of water may be small enough to be removed by pumping.
当隧道穿越粘稠土质时，水的流量也许会小到用水泵就可以抽干。
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