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286页（304字）
指学业由于勤奋而精通，例唐代大文豪韩愈在《进学解》中，第一句就说："业精于勤，荒于嬉"，后学者应以此自勉。
The first words the great Tang Dynasty scholar Han Yu wrote in"Jin Xue Jie"were"Only through diligencc is a subject mastered：through play it is lost．"scholars should take note of this and strive hard．