环境的破坏、污染的产生，使地球的生态环境失去了平衡，人类生存空间所存在的问题日趋严重。
Destruction of the environment, production that polluted, make the ecological environment on the earth overbalance, the problem that the human living space exists is becoming more serious.
环境的破坏、污染的产生，使地球的生态环境失去了平衡，人类生存空间所存在的问题日趋严重。
Destruction of the environment, production that polluted, make the ecological environment on the earth overbalance, the problem that the human living space exists is becoming more serious.
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