unheard-of

"unheard-of" Chinese translation ("unheard-of" in Chinese, "unheard-of" 中文翻译, "unheard-of"发音):

unheard-of adj. 无前例的,前所未闻的,空前的 [an ~ holocaust 史无前例的大屠杀 The incidence of crime has reached ~ levels. 犯罪率已达到前所未有的水平 ]