laceration of anal sphincter

例句：

1. 1. The soldier was severely injured in the battle.
   士兵在战斗中受了重伤。
2. 2.The wound was deep and required immediate medical attention.
   伤口很深，需要立即医疗处理。
3. 3.The doctor performed a laceration repair on the patient's leg.
   医生为病人的腿进行了一次割伤修复手术。