口唇疮

例句：

1. 1. She had a painful sore on her lips that wouldn't heal.
   她嘴唇上有个疼痛的溃疡，一直不好。
2. 2. The doctor prescribed an antibiotic ointment for the patient's oral lesion.
   医生给病人开了一种抗生素软膏治疗他的口腔溃疡。
3. 3. He was advised to avoid spicy foods and hot drinks while his oral ulcer was healing.
   他被建议在口腔溃疡愈合期间避免吃辛辣的食物和喝热饮。