These soils usually contain large amounts of clay and easily become water-saturated.
这些土壤通常含有大量的粘土，很容易变成水饱和状态。
Second, as you know, sand dunes contain other types of particles, besides sand, including clay and silt.
第二，正如你所知，除了沙粒，沙丘还含有其他类型的颗粒，包括粘土和淤泥。
Many sedimentary rocks contain clay minerals and 76% of forming-rock minerals of slope rocks can produce clay minerals during the weathering processes.
除沉积岩斜坡含粘土矿物外，76%以上的斜坡岩石造岩矿物还可形成次生粘土矿物。
Because soft rocks have low strength and high porosity and contain large amount of expansive clay minerals, the freezing-thawing process of soft rock is complicated.
由于软岩为强度低、孔隙度大、胶结程度差、含有大量膨胀性粘土矿物的松散、软弱岩层。
No soil is pure clay, silt, sand or gravel, but a soil may contain a large amount of one of these.
没有什么土壤是单纯的粘粒、粉粒、砂粒和砾石。只不过是某种土粒为主而已。
Those of the fluvial facies, especially the lacustrine facies and palaeosols, are mainly composed of very fine sands and also contain some quantities of silt and clay.
河流相、特别是湖沼相与古土壤以极细砂含量占优势，且具一定含量的粉砂和粘土。
Those of the fluvial facies, especially the lacustrine facies and palaeosols, are mainly composed of very fine sands and also contain some quantities of silt and clay.
河流相、特别是湖沼相与古土壤以极细砂含量占优势，且具一定含量的粉砂和粘土。
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