题目内容
The Great Gorge of the Nu River extends for more than ______ kilometers .
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After Nu River runs into Myanmar, it is called the ______.
Traditional ______ enable local people to go across the Nu River conveniently.
In Yunnan, the domestic river systems are the ______ and the ______.
In the rainforests in Yunnan, what plant is known as the “Longevity Pine"?
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