1 [U] (formal 正式) the act of improving or changing sb/sth 改良；革新

2 the Reformation [sing] new ideas in religion in 16th century Europe that led to changes in the Roman Catholic Church and the forming of the Protestant Churches; the period in history when these changes were taking place 宗教改革（指16世纪欧洲的宗教新思潮，导致罗马天主教的变革及新教的成立）；宗教改革时期