Global Shortage of Fresh Water
Many people believe that the world’s supply of fresh water will never be used up. They think that fresh water comes from such a variety of sources that it is always sufficient for use. Such an opinion leads to a shocking waste of water.
As a matter of fact, the earth is short of fresh water. Furthermore, with the rapid growth of the world population, the rising demand for water by industry, and the serious pollution of our surroundings, the world is facing the ganger of running out of fresh water. Actually, in some big cities, fresh water can not meet the daily needs.
Therefore, to find new ways to save water is an urgent task. First, we should pass strict laws to control any waste of water. Second, scientists must work even harder to purify sea water, and try to find substitute to reduce the use of fresh water.
全球淡水短缺
许多人认为，世界上的淡水供应将永远不会枯竭。他们认为，新鲜的水来自于这样的各种来源，它总是足够的使用。这种观点导致了一种令人震惊的浪费水。
事实上，地球是缺乏淡水的。此外，随着世界人口的快速增长，对水的需求不断增加，以及严重的环境污染，世界面临着枯竭的危险淡水。其实，在一些大城市，淡水不能满足日常需要。
因此，寻找新的方法来节约用水是一项紧迫的任务。首先，我们应该通过严格的法律来控制水的浪费。其次，科学家必须更加努力地去净化海水，并设法寻找替代品来减少淡水的使用。
