众所周知,水是生命之源,人可以三天不吃饭,但不可以三天不喝水。在我们人体内水的含量比例高达70%,可见我们的生命一刻也离不开水。可是如此宝贵的水资源,现在却面临着重大危机。目前,全世界有1/6的人口、约10亿多人缺水。在世界许多地方,对水的需求已经超过水资源所能负荷的程度,同时有许多地区也濒临水资源利用的不平衡,专家估计,到2025年世界缺水人口将超过25亿。我国是全球人均 As we all know, water is the source of life, people can not eat for three days, but not for three days without water. The proportion of water in our body is as high as 70%, showing that we can not live without water in the moment. However, such a precious water resource is now facing a major crisis. At present, one sixth of the world’s population and about 1 billion people are short of water. In many parts of the world, the demand for water has exceeded the capacity of water resources, and many areas are also at risk of imbalance in water use. Experts estimate that by the year 2025, the world’s water-scarce population will exceed 2.5 billion. Our country is the world’s per capita