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38页（223字）
形容勤勉不息，甚至忘了进食，例科学家专心进行实验时，往往发愤忘食，夜以继日，直到实验完成。
In order to see an experiment through，scientists become so immersed in their work that they even forget to eat for days on end．