callus

例句：

1. 1. Thewound had formed a hard skin over theinjury.
   伤口形成了一层硬皮覆盖在伤处。
2. 2. The scar on his face isstill visible from his childhood accident.
   他脸上的痕迹仍然可以从他的童年事故中看出来。
3. 3.The doctor advised him to keep the woundclean and apply a callus cream.
   医生建议他保持伤口清洁并涂抹一种硬皮药膏。