subungual

例句：

1. 1. The surgeon removed the tumor from the subungual area.
   外科医生从皮下区域取出了肿瘤。
2. 2. The patient was treated for an infection that had developed under the subungual skin.
   患者因感染而治疗，该感染发生在皮下皮肤下。
3. 3.The doctor advised the patient to keep the wound clean and avoid touching it with dirty hands.
   医生建议病人保持伤口清洁，并避免用脏手触摸它。