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水是万物生长、人类生存、社会发展、国家前进的极其重要的制约因素。没有水就没有生命,没有水就没有人类社会的一切。自然界
Water is an extremely important constraint for the growth of all things, human existence, social development and the progress of our country. There is no life without water and no human society without water. nature