出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第102页（205字）
比喻忘本，现在也用来比喻对于本国历史的无知，例孙爷爷告诫儿孙们要牢记家传古训，切莫数典忘祖。
Grandfather Sun reminded his grandchildren that they must never forget the family’s traditions and teachings