The sand stratum in old river bed is important factor affecting stability of dam.
古河道砂层的存在，是影响围坝稳定的主要环境因素。
The deposition of mud and sand in the river often causes us much trouble.
泥沙在河中沉积常给我们带来许多麻烦。
The sand has silted up the mouth of the river.
泥沙已把河口堵住了。
Most of the sand and silt was carried down from the river.
大部分泥沙都是由河流沉积下来的。
With the rising price of steel, iron profit space choose river sand increased greatly.
随着钢材价格的不断攀升，河沙选铁的利润空间大幅提升。
The sand have silt up the mouth of the river.
沙和石头沉到了河底。
The sand have silt up the mouth of the river.
泥沙已把河口堵住了。
The sand has silted up the mouth of the river.
沙和石头沉到了河底。
Water less sand and more "salient features of the Yellow River."
“水少沙多”是黄河的突出特点。
Water less sand and more "salient features of the Yellow River."
“水少沙多”是黄河的突出特点。
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