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设计说明：Nowadays, environmental problems are becoming more and more serious.Environmental problems in different countries and regions are universal and common in nature. At present, environmental problems that have aroused worldwide concern mainly include: global climate change, acid rain pollution, ozone layer depletion, transboundary transfer and diffusion of toxic and harmful chemicals and wastes, sharp decrease of biodiversity, Marine pollution and so on.

指导老师：江颖欣，Samantha