The devastation was unprecedented. 造成的破坏前所未见
on an unprecedented scale. 规模空前
Fertilizers produced unprecedented results... 化肥使那些从前被无视的闲散土地上
some of us acquired unprecedented comforts. 我们中的一些人获得了空前的安逸
are gathering in unprecedented numbers. 正以前所未有的数量聚集