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拉巴特专电 到本世纪末,水的消耗量将比世纪初增加10倍;在未来的20—30年间每立方米的饮用水成本将比现在高出2—3倍。当今世界上仍有10亿以上的人口享受不到卫生用水,迅速增长的人口对水资源
By the end of this century, water consumption will be 10 times higher than that of the beginning of this century. The cost per cubic meter of drinking water in the next 20 to 30 years will be 2-3 times higher than now. In the world today, more than 1 billion people still have no access to sanitation and water. The rapidly growing population is suffering from water