1、A fellow rower might notice that his right palm is more calloused than the left.
同伴可能會注意到，馬宏升的右手掌比左手掌粗糙。

2、The old rake, sturdy in my calloused hands, conveyed the feel of firm earth beneath its tines.
牢牢握在我起了繭子的手里的那把舊耙子傳遞著尖齒下堅實土地的感覺。

3、He sighed, and laid his calloused fist on the table.
他嘆了口氣，把長滿老繭地拳頭摁在了桌上。