that has never happened, been done or been known before 前所未有的;空前的;没有先例的 The situation is unprecedented in modern times. 这种情况在现代还没有出现过。 There were unprecedented scenes of violence in the city’s main square. 该市主要广场出现了前所未有的暴力场面。
Oxford Collocations Dictionaryverbs- be
- entirely
- quite
- totally
- …