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274页（217字）
低着头工作，形容做事勤奋努力，例自创业以来，他一直勤奋努力埋头苦干，才有如此辉煌的成就。
Ever since he started his career，he has put his mind to it and worked very hard No wonder his success has been phenomenal．