The Three Gorge hydro project is a grand systems engineering. It's dispatching and running will bring a series of complex affection to the environment of the whole Yangtze River valley.
三峡水利枢纽是一项规模宏大的系统工程，它的调度运行对整个长江流域的生态环境都将带来一系列复杂的影响。
The Colorado River Valley due to the strong do cutting action to form, so also known as the Grand Canyon.
峡谷由于受到科罗拉多河的强烈下切作用而形成，所以又称科罗拉多大峡谷。
The Colorado River Valley due to the strong do cutting action to form, so also known as the Grand Canyon.
峡谷由于受到科罗拉多河的强烈下切作用而形成，所以又称科罗拉多大峡谷。
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