a clump of earth的用法和样例：
- A stream meandered gently through a clump of trees.
- His car crashed into a clump of trees and overturned.
- When he turned to stare, it was only a clump of broken stone once more, half-shrouded in moss and encroaching earth.
- A clump or tuft, as of growing grass.
- The church then peeped out modestly from a clump of trees.