extracutaneous

例句：

1. 1. The doctor performed an extracutaneous biopsy on the patient's skin.
   医生在病人的皮肤上进行了一次表皮活检。
2. 2. The extracutaneous infection required immediate medical attention.
   这种表皮下感染需要立即医疗关注。
3. 3.The extracutaneous layer of the skin is responsible for protecting it from harmful substances.
   表皮层负责保护皮肤免受有害物质的伤害。