The farmers found the alluvial deposits at the mouth of the river very fertile.

农发现这条河口底下的沉积物很肥沃。

Four alluvial deposits distributing along Yuanjiang river and the diamondiferous rocks that supply diamonds to these placer deposits have striking properties of varied sources and multi-phases.

沅水流分布4个砂矿床，供给砂矿的含岩体具多期多源特点。