soil erosion 土壤侵蚀
water erosion 水流侵蚀
heavily gullied 受严重冲刷的
1. The heavy rain gullied the farmland.
暴雨在农田中冲刷出了沟壑。
2. The hillsides were deeply gullied by years of deforestation.
由于长年的森林砍伐，山坡上出现了深深的沟壑。
3. The landscape was gullied after the flash flood.
山洪爆发后，地貌变得沟壑纵横。
A: Look at the field; it has been heavily gullied by the storm.
A：看那片田地；它被暴风雨冲刷得沟壑纵横。
B: We need to prevent the soil from being gullied in the future.
B：我们需要防止以后土壤被冲刷形成沟壑。
1) 冲刷成沟
2) 侵蚀形成沟壑
1. 冲刷成沟
e.g. The soil was gullied by the sudden downpour.
暴雨冲刷使土壤形成了沟壑
verb
1. to cause gullies to form in the soil, typically by water erosion