烧伤在他前臂上留下了一道无法抹去的疤痕，永远提醒着那次事故。
The burn left an indelible scar across his forearm, a permanent reminder of the accident.
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解释
形容物理痕迹无法消除，引申为旧伤的永久印记。
The burn left an indelible scar across his forearm, a permanent reminder of the accident.
形容物理痕迹无法消除，引申为旧伤的永久印记。