1. 形容詞
   史無前例的, 無先例的
   空前的
   前所未有的, 前所未見的
   (指前所未有)開天闢地的, 闢地開天的
   破天荒的
   

   同義字詞
   fresh,new,novel,original,strange,unaccustomed,unfamiliar,unheard-of,unknown
   

例句

1. An unprecedented growth in small business.
2. The win is unprecedented in to the region.
3. But for McMath, it took unprecedented courage.
4. Never happens , must be unprecedented since yesterday.
5. He states this kind of double whammy is unprecedented .
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