"Historically, it got its name because of its colour - because the water contains more mud and sand than other rivers. But now it's yellower because of human activities, " he said.

穆教授以受到水土问题影响最大的黄河流域为例说，“黄河在历史上因为含沙量高于其它河流而因颜色而得名，但如今人类活动让黄河变得更黄了。”

youdao

Sand wave movement is an important form of sediment movement for alluvial rivers and has a great effect on stream resistance.

沙波运动是冲积河流泥沙运动的一种重要形式。沙波的消长对河道水流的阻力损失有很大的影响。

youdao

If the foundation is surrounded by rivers, flowing sand, sludge and other phenomena, we should take effective measures to meet the requirements of bearing capacity of foundation.

如基础地基四周有暗河、流砂、污泥等现象，应采取有效措施使地基承载力达到规定要求。

youdao

Instead,you should use sand from rivers or from other areas of land that are not near the sea.

VOA: special.2009.09.14

It would also bring enough sand for construction purposes without depleting sand in the rivers eventually killing these rivers.

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There are stark deserts, high peaks, endless sand dunes, broad rivers, and every sort of stunning natural beauty.

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When rivers that had burst their banks receded, they left sand up to two metres deep.

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