单词：gully erosion
gully erosion的用法和样例：
例句
- 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。
- 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。
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