adj.麻木的；无情的；硬结的；起老茧的
Jane's kindly and gentle nature could not but revolt at her sister's callous behavior. 简的友善与温柔怎么也打动不了她姐姐的那颗无情的心。
adj.变得无情的；变硬的；结茧的
动词callouse的过去式和过去分词形式.
