"calloused skin"
"with a workman's callous hands"
慕白:双刀大侠的手,又粗又硬。
His hands were rough and calloused, from years of karate practice.由于多年练习空手道,他的双手粗糙不平,布满老茧。
A fellow rower might notice that his right palm is more calloused than the left.同伴可能会注意到,马宏升的右手掌比左手掌粗糙。