chancre

例句：

1. 1.He developed a chancre on his arm after being bitten by a dog.
   他手臂被狗咬后长了一个疮。
2. 2.The doctor prescribed antibiotics to treat the patient's chancre.
   医生开了抗生素来治疗病人的疮。
3. 3.The chancre was painful and required frequent cleaning and dressing.
   这个疮很痛，需要经常清洗和包扎。