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144页（194字）
指严格要求自己，一心为公家，例张三行事一向兢兢业业，克己奉公，从来未曾为私利着想。
Zhang San was a diligent and selfless worker．Whatever he did he never gave a thought of personal gain．