erosional form

例句：

1. 1. The erosional form of the cliff is visible from the top of the hill.
   从山顶上可以看到悬崖的侵蚀形态。
2. 2. The study of erosional forms is important for understanding the geological history of a region.
   研究侵蚀形态对于理解一个地区的地质历史非常重要。
3. 3. The erosional forms of rocks can be used to determine their age and origin.
   岩石的侵蚀形态可以用来确定它们的年龄和来源。