unprecedented

形容词

1. 1

   前所未有的、史无前例的、空前的

   The city faced an unprecedented shortage of clean drinking water.

   该城市面临前所未有的干净饮用水短缺。

2. 2

   破纪录的、空前的指规模或程度

   Ticket sales reached unprecedented levels during the final week.

   最后一周的票房达到了破纪录的水准。