水是制约城市形成和发展的重要因素，在经济高速发展的今天，城市水资源的短缺已受到人们的普遍关注。如何使水资源满足人们日益增长的需要，已成为世界性问题。谈到保证用水，人们往往注重供水。认为只有多供水，才能满足用水。其实，人们忽略了一个关键问题，这就是水的... Water is an important factor restricting the formation and development of cities. At a time of rapid economic development, the shortage of urban water resources has drawn people’s attention. How to make water resources meet people’s growing needs has become a worldwide problem. When it comes to ensuring water, people tend to focus on water supply. Think only more water, in order to meet the water. In fact, people ignore a key issue, which is water ...