lichened

例句：

1. 1.The old tree was lichened with moss.
   这棵老树被苔藓覆盖。
2. 2. The rock face is lichened with green growth.
   岩石表面长满了绿色的生长物。
3. 3. The moss-covered rocks are a common sight in the forest.
   覆盖着苔藓的岩石是森林中的常见景象。