The flood waters carry in them soil (called silt) from the upper parts of the river valley to the lower partsand so to the sea.
河水把泥土（或叫淤沙）从上游河谷带到下游地区乃至入海口。
The flood waters carry in them soil (called silt) from the upper parts of the river valley to the lower partsand so to the sea.
河水把泥土（或叫淤沙）从上游河谷带到下游地区乃至入海口。
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