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当前,人类与环境存在着许多不和谐的因素,生活在地球上的每一个人,在享受高科技带来的物质文明的同时,必须学会对地球环境有所回报。
At present, there are many factors of discord between mankind and the environment. Everyone living on the planet must learn to contribute to the global environment while enjoying the material civilization brought by high technology.