结疤

例句：

1. 1. He had a deep cut on his arm that needed stitching.
   他的手臂上有一个深口子，需要缝针。
2. 2. She's got a scar from her childhood injury.
   她有一块童年受伤留下的疤痕。
3. 3. The doctor advised him to cover the wound with a bandage to prevent further scarring.
   医生建议他用绷带覆盖伤口以防止进一步的疤痕形成。