| 〈成〉 never existed before; hitherto unknown; unprecedented: |
| | 前所未有的盛况 unprecedentedly grand occasion |
| | 遇到前所未有的困难 encounter greater difficulties than ever |
| | 他一人独得七块金牌,这在奥运会历史上是前所未有的。 He alone got seven gold medals. This is unprecedented in the history of the Olympic Games. |