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人口、资源、环境是困扰全世界的三大难题。当今世界,环境问题是人类共同面临的挑战,环境的日益恶化,已对整个人类的生存
Population, resources and the environment are the three major problems plaguing the world. In today’s world, environmental problems are a common challenge for mankind. The environment is worsening and has been affecting the entire human race.