You know, for you to generate rainfall, there are a number of factors that you have to look at, moisture availability and so on and so forth.

你知道，要产生降雨，你必须考虑若干因素，比如湿度可利用性等等。

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Sudden changes in moisture availability, plant or animal diversity or development can degrade and often destroy this fragile landscape.

湿度或动植物种类的突然变化以及人为开发都会削弱甚至破坏这片脆弱的地貌。

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