erosion of streams

例句：

1. 1. The rivereroded the banks of the town.
   河流侵蚀了城镇的河岸。
2. 2. Thedamage caused by the floodwas due to erosion.
   洪水造成的损害是由于侵蚀造成的。
3. 3. Erosion is a natural process that cancause land to change shape over time.
   侵蚀是一种自然过程，可以导致土地随时间改变形状。