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随着工业化的推进,人类的家园——地球已经遭遇了越来越多的环境问题,这引起了世界各国人民的高度关注。很多同学对环保
With the advancing of industrialization, humankind's homeland - the Earth has encountered more and more environmental problems, has aroused the great concern of people all over the world. Many students on environmental protection