They go to the site of the change and drop a grain of soil.

他们前往发生变化的地方，然后丢下一粒泥土。

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Soil water storage ability is different with different site conditions.

立地条件不同，土壤蓄水能力不同；

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Soil water storage ability is different with different site conditions.

立地条件不同，土壤蓄水能力不同；

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