severe injury

例句：

1. 1. He suffered a severe injury in the accident.
   他在事故中受了重伤。
2. 2.The doctor advised him to take care of his wound and avoid any further severe injuries.
   医生建议他要好好照顾伤口，避免进一步的严重伤害。
3. 3. The firefighters were called to put out a severe injury caused by the explosion.
   消防员被召来扑灭由爆炸引起的严重伤害。