法定职责必须为、法无授权不可为【英】

performing the functions that have been prescribed by law while refraining from acting where the law has not authorized them to act.

译文来源

http://english.qstheory.cn/2015-03/16/c_1114459319.htm

例句

1. 执法是行政机关履行政府职能、管理经济社会事务的主要方式，各级政府必须依法全面履行职能，坚持法定职责必须为、法无授权不可为，健全依法决策机制，完善执法程序，严格执法责任，做到严格规范公正文明执法。——《加快建设社会主义法治国家——习近平在党的十八届四中全会第二次全体会议上的讲话（节选）》

1. The enforcement of law represents the primary means by which administrative agencies carry out governmental functions and administer economic and social affairs. Governments at all levels are required to carry out their functions in full and in accordance with the law, performing the functions that have been prescribed by law while refraining from acting where the law has not authorized them to act. They must improve mechanisms for law-based decision making; refine law enforcement procedures; strictly define responsibilities in law enforcement; and strive to ensure that law enforcement is carried out in a strict, standardized, impartial, and civil manner.—Quoted from Accelerating the Establishment of Socialist Rule of Law in China —Speech at Session I,II of the Fourth Plenary Session of the Eighteenth CPC Central Committee on October 23, 2014