水是生命之源,是生活中一天也离不开的物质。随着社会的发展,人们生活水平的提高,人日均用水量在不断提高。水作为地球上一种生命赖以生存的物质,既不是一种取之不尽,用之不竭的资源,也不是可以创造和再生的资源。水既可以造福人们的生活,也会给人们的生活带来灾难 Water is the source of life, a substance that can not be separated from life. With the development of society, people’s living standards improve, and people’s daily water consumption is constantly increasing. Water, as a kind of material upon which life lives on Earth, is neither an inexhaustible source nor an inexhaustible resource that can be created and regenerated. Water can not only benefit people’s lives, but also bring disasters to people’s lives