ephemeral gully erosion

• 浅沟侵蚀

ephemeral gully erosion的用法和样例：

例句

1. From a practical standpoint, rill erosion forms small channels.
   从实用的观点看，细沟侵蚀能形成很小的渠槽。
2. In late spring, the combination of frozen subsoil, bare surface cover and thawing topsoil facilitated ephemeral gully growth.
   该区春季冻融时期流域尺度上的浅沟侵蚀研究还较少，获得该时段浅沟侵蚀的资料非常重要。