Movement of soil particles from one place to another by wind and water is a natural phenomenon.

运动的土壤颗粒从一个地方到另一个地方利用风和水是一种自然现象。

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These textile materials act AS a barrier to the movement of soil particles but permit the flow of water necessary for adequate drainage.

这些纺织材料相当于一道屏障，它阻止了土壤颗粒的运动，但允许水的流动，以利于排水。

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It was movement of particles of soil, but it has high roughness that reduces the transport capacity of sediment of the runoff.

UNESCO: AQUATACAMA