It is unprecedented for an heir to the throne to marry outside of a church, but the Church of England, of which Charles will be head if he becomes king - has qualms about remarriage for divorcees.

• S: unprecedented 前所未有的，没有先例的。比如说取得了前所未有的进步，make unprecedented progress.；新闻中说王储不在教堂结婚是前所未有的。