The power of the nature lies in the mountains and rivers. The rising clouds bring the audience's thinking up to the sky and the real nature.

作者的青绿山水中孕育自然的力量，云起时，也将人的思绪带起，飞向真正的自然。

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That organization noted Cleveland could produce ash clouds rising more than 20, 000 feet above sea level.

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For instance, clouds rising in the troposphere, the lower level of the atmosphere where air mixes freely, will bump up against the boundary of the much more stable stratosphere, forming ripples in the process.

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Since rising air causes clouds to form (the risen air eventually cools to the temperature of its elevated surroundings, and any water vapour it contains thus condenses), the result would be more rain than would fall in the absence of the artificial aerosols.

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