"a callous indifference to suffering"
"cold-blooded and indurate to public opinion"
"calloused skin"
"with a workman's callous hands"
来自《简明英汉词典》
来自《现代汉英综合大词典》
来自《简明英汉词典》
来自《简明英汉词典》
来自《简明英汉词典》