unprecedented
adj
without precedent; never having happened, been done or been known before 无前例的; 前所未有的; 空前的
unprecedented levels of unemployment 失业率达到的前所未有的严重程度
a situation unprecedented in the history of the school 该校自有校史以来未曾出现过的情况.
I guess she's gone to visit some friends in another town.
我猜她是去别的城镇看朋友了。
The fax has greatly changed office work, especially in China.
特别是在中国,传真机大大地改变了办公室的工作。
Even before India won independence from its British rulers, it was clear that Gandhi was the key figure and leader in the struggle of 380 million Indians to govern themselves.