facetted pebble是什么意思

用法例句

One of the most important evidences of the shelf desertization is that many stones have been collected from the seabed of the southern Yellow Sea of China, which was regarded as ventifacts by the hypothesis.

但南黄海海底砾石的扁平和长条形态 ,以及无定向线形风蚀沟槽分布的表面结构特征不具备风棱石的特点 ;海底砾石分布区与其北部“沙漠化区”以及海底黄土沉积区的位置关系和偏北风吹扬下沉积物粒度的区域分异规律不符。