fracture blister

例句：

1. 1. Hehad a fractured bone in his arm.
   他的手臂骨折了。
2. 2. The car'sengine has a crack in it.
   这辆车的引擎有裂缝。
3. 3. The old tree hadseveral splinters on its trunk.
   那棵老树的树干上有几块碎木片。