起老茧的

例句：

1. 1. She had to work hard to get her hands to form calluses.
   她不得不努力工作，让她的手形成老茧。
2. 2. The farmer had to work in the hot sun for hours, forming calluses on his hands.
   这位农民在炎热的阳光下工作了几个小时，手上形成了老茧。
3. 3. The worker had to wear gloves while working with sharp tools, as it was dangerous to form calluses on their hands.
   这位工人在用锐利的工具工作时必须戴上手套，因为手上形成老茧是危险的。