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就河流水资源利用这一改造自然的公益事业 ,在肯定其巨大效益的基础上 ,分析提出了它所带来的主要环境问题 ,针对所提出的各个环境问题 ,作出了与之相应的有关对策
On the basis of affirming its tremendous benefits, the public welfare undertaking which uses water resources to transform nature is analyzed and put forward the major environmental problems it brings, and corresponding countermeasures are put forward according to the various environmental problems proposed