After the earthquake, the community worked together to reestablish the damaged school.

reestablish 由前缀 re-（表示"重新"）和动词 establish（建立）组成，字面意思是"重新建立"。前缀 re- 常用于表示重复或恢复的动作，establish 表示"建立、设立"。reestablish 合起来表示"重建、恢复"。