Coal is an important energy in China, coal combustion is the primary source of pollutions which cause great destructions to the ecological environment.
煤在我国是一种重要的能源，煤的燃烧是造成我国生态环境破坏的最大污染源。
Water is one of the most crucial elements in ecological landscape, for it's the source of all lives.
水是生态景观中最重要的元素之一，有水才会有生命。
Except the tremendous economical benefit, it can also improve the ecological environment of upstream and mitigate water source in downstream.
除具有巨大的经济效益外，对缓解黄河下游的用水和改善上游的生态环境也有明显的社会和生态效益。
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