deep erosion

例句：

1. 1.The river has been deeply eroding the banks for centuries.
   这条河已经深深地侵蚀了河岸几百年了。
2. 2. The deep erosion of the soil caused the land to sink.
   土壤的深度侵蚀导致了土地下沉。
3. 3. The engineers were tasked with preventing further deep erosion of the riverbed.
   工程师们被指派防止河流床进一步的深度侵蚀。