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长期以来,人类开发自然资源以确保其生存。还在不久以前,我们所需要的自然资源超过了供给量,对大多数人说来,是不可想象的。这种态度使人类消耗他的自然资源而很少考虑保护或经济地利用。人类不能长期对他的自然资源采取这样任性和漫不经心的态度,对我们的水资源也不例外。必须通过目前水的供应和现在及预计需要量的详细比较来确定我们的自然资源是否足够。根据全国的平均消耗量,我们的水资源在一些地
For a long time, mankind has developed natural resources to ensure its survival. Not too long ago, the natural resources we needed exceeded the supply and, to most people, it was inconceivable. This attitude leaves human consumption of his natural resources with little consideration for conservation or economical use. Human beings can not take such a wayward and careless attitude toward their natural resources for a long time, and our water resources are no exception. The adequacy of our natural resources must be determined by a detailed comparison of current water supply with current and projected requirements. According to the average consumption in the country, our water resources are in some places