After weeks of unpacking boxes in the warehouse, Mark noticed a callus forming on his palm.

在倉庫拆了幾週的箱子後，馬克發現手掌上開始長出老繭。

The new hire asked HR whether the company would cover treatment for a painful foot callus.

新進員工詢問人資部門，公司是否會給付腳上疼痛老繭的治療費用。

Our flight attendants often develop calluses on their heels from standing during long-haul flights.

我們的空服員因長途航班中一直站著，腳跟常會長出老繭。