With the increasingly serious shortage of water resources, protecting water resources and water conservations has become an urgent task for human beings. If we do not cherish the water, then the last drop of water in earth would be our tears. At present, some countries are facing with water shortage, and there are more than one billion people can't drink clean water. Therefore, water conservation must be attached more attention than ever before. The problem of water shortage of the urban population has become increasingly prominent. Some people may think that we can do nothing for water conservation or our efforts make no use to it. However, great things may be done by mass effort. As long as each of us has the sense of water conservation and take actions, we can see huge changes.

隨著水資源短缺不斷加劇，保護水資源和節(jié)約用水已經(jīng)成為人類的一項緊急任務(wù)。如果我們不珍惜水，地球上的最后一滴水就是我們的眼淚。目前，一些國家正面臨著水資源的短缺，超過十億人口喝不到干凈的水。因此，我們必須比以前更注意節(jié)約用水。城市人口水資源短缺問題已經(jīng)日益突出。有的人可能認為我們不能為節(jié)約用水做些什么，或是我們的努力對此沒有用。但是，偉大的事情是從很多努力而來的。只要我們每個人都有節(jié)約用水的意識并行的起來，我們就可以看到巨大改變。

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