injury of mouth

例句：

1. 1.He sustained a mouth injury while playing football.
   他在踢足球时受了口部伤害。
2. 2.The dentist advised her to avoid biting into hard objects as it could cause a mouth injury.
   牙医建议她避免咬硬物，以免造成口腔损伤。
3. 3.After the surgery, she was advised to keep her mouth closed and avoid any mouth injuries.
   手术后，她被告知要紧闭嘴巴，避免任何口腔损伤。