And the boundary of them has the same lithologic character: the ravinement surface of river course or exposure mudstone of flooding plain and root clay.

二者的界面是相同的，均为河道砂体底部的冲刷侵蚀面或者是暴露过泛滥平原泥岩、根土岩等。

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Carvings on root, stone and nut, painted eggshell, modeling with clay, porcelain and wax are all exquisite, especially those of figurines with their natural beauty.

雕刻的根，石头和螺母，彩蛋，造型粘土，瓷器和蜡都是精致的，尤其是那些雕像和他们的自然之美。

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Is the existing root zone high in silt and clay?

当前的根系层是否高含淤泥和粘土？

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The region's hard-packed clay soil welcomes a unique mix of plants with deep-penetrating root systems.

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