1. 城市化过程中产生的问题 城市是人工化环境城市的主体是人类人与环境的矛盾是非常尖锐的比较突出的表现有 �环境质量下降 包括大气污染 Template




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tomski1. 城市化过程中产生的问题 城市是人工化环境城市的主体是人类人与环境的矛盾是非常尖锐的比较突出的表现有 coloring