edge fracture

例句：

1. 1.The rock was so unstable thatit could easily experience an edge fracture.
   这块岩石太不稳定了，很容易发生边缘断裂。
2. 2. The old tree's trunk hada significant edge fracture that needed to beaddressed.
   这棵老树的树干有一个显著的边缘断裂，需要处理。
3. 3. The engineercarefully inspected the edge fracture in thebridge before proceeding with repairs.
   工程师在修复桥梁之前仔细检查了桥上的边缘断裂。