乃知四体勤，无衣亦自暖打一字谜_乃知四体勤，无衣亦自暖答案_乃知四体勤，无衣亦自暖谜底_乃知四体勤，无衣亦自暖的答案_乃知四体勤，无衣亦自暖的谜底_谜语大全及答案

谜语：乃知四体勤，无衣亦自暖【打一常用词】