Today, rivers are controlled for many reasons, primarily to maintain reliable water supplies for daily, agricultural and industrial needs, for power generation, for navigation, and to prevent flooding.
今天，河流控制的原因有很多，主要是为了维持可靠的水资源供应，以满足日常生活、农业和工业、发电、航行的用水需要，并起到防洪作用。
Since then, the goals of power generation and flood control have sometimes been in conflict. Regulating water levels can reduce how much electricity is made.
自那以来，发电和控制洪水的目标有时会互相矛盾，调控水位就会减少发电量。
In any case, Britain's infrastructure is extensively privatised, with private firms providing water, power generation, transmission lines, railway travel and much besides.
从任何方面来说，英国的基础设施都是高度私有化的，不管是供水，发电，输电线路，还是铁路运输，包括很多其它设施都由私营公司提供。
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