长江三峡水利枢纽工程以规模巨大、项目专业深广、施工技术复杂而举世瞩目。
Three gorges hydro project on the Changjiang River attracts worldwide attention for its huge-scope, depth and width in specialties and complexity of construction technique.
三峡库区的森林水文作用，对于长江三峡水利枢纽工程的安全运行和效益发挥具有重要意义，对于改善和维持三峡库区的生态环境具有重要作用。
It is significant that the forestry hydrology function of reservoir area of Three Gorges gives play to the safe operation and benefit of the water control project in Three Gorges of Yangtze River.
最后我们参观了长江三峡大坝，它是目前世界上最大的水利枢纽工程。 本句若去掉从句，主句部分的含义仍然完整。
Finally we visited to the Giant Yangtze Gorges Dam, which is the greatest key water control project in the world at present.
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