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262页(193字)
指追问事情发生的原因,例要能掌握一门学科,就必须追本溯源彻底了解,方能真有所得。
To really get a good grasp of a science,one must get to its fundamentals before one can understand it.