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水資源短缺 Water Shortage
People can't imagine life without water. Without it, the earth we live on would be a dead one. There would be no trees, no crops, no animals and no people. So water is considered to be next to oxygen in importance.
Although nearly three quarters of the earth's surface is covered with water, it is sea water and undrinkable. The demand for water is increasing, while water resources are scarce. Agricultural production needs enormous amounts of water, so does industry. Besides, the rapid growth of population makes it more and more difficult for people to survive because of the water shortage. So water shortage has become one of the most serious problems.
Fortunately, people have realized this pressing problem and are trying to find ways to salve it. First, people are urged to economize on water. Second, measures are taken to protect water resources. Third, circulating water is used for industrial purposes over and over in factovies and treated sewage water is used for irrigation in farming land.
人們不能想象沒有水的生活，沒有它，我們居住的地球是一個死的。就沒有樹木、沒有莊稼、沒有動物和人，因此水被認為在重要性僅次于氧。
雖然近3/4的地球表面被水覆蓋，它是海水，不能飲用。人類對水的需求正在增加，而水資源的匱乏。農業生產需要大量的水，那么產業。此外，因為水的短缺，人口的迅速增長使人們的生存越來越困難，因此水資源短缺已成為最嚴重的問題之一。
幸運的是，人們認識到這個問題并試圖尋找解決的方法。首先，人們呼吁節約用水。第二，采取措施保護水資源。第三，循環水用于工業用途，遍地和處理的污水用于灌溉農業土地。
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