求翻译：人类对水资源的开发利用分两大类：一类是从水资源取走所需的水量，满足人民生活和工农业生产的需要后，数量有所消耗，质量有所变化，在另外地点回归水源。另一类是取用水能（水力发电）、发展水运、水产和水上游乐，维持生态平衡等，这种利用不需要从水源引走水量，但是需要河流、湖泊、河口保持一定的水位、流量和水质。本节所讨论的水资源利用情况主要是第一类用水形式。是什么意思？

Human development on water resources were divided into two categories: one is the amount of water removed from the water resources to meet the needs of the people's lives and industrial and agricultural production, the number of consumption, the quality change in the return of the other locations so

Human beings in the water resources development and utilization of the divided into two categories: the first category is taken away from the water resources the amount of water required to meet the people's lives and needs of industrial and agricultural production, consumption, and there has been a

Humanity to water resources development use minute two big kind: One kind is a water volume which takes from the water resources needs, after satisfies the lives of the people and the industry and agriculture production need, quantity has the consumption, the quality has the change, in other place r

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