thick calluses
remove calluses
prevent calluses
hard calluses
A: Why do you have such thick calluses on your fingers?
A：为什么你的手指上有这么厚的茧？
B: I play the guitar every day, so it's quite normal.
B：我每天都练吉他，所以这很正常。
1) 皮肤上的老茧
2) 胼胝
3) (比喻) 情感上的麻木
1. 胼胝；老茧
noun
1. Areas of thickened, hardened skin caused by repeated pressure or friction.