unprecedented
unprecedented(亘古未有), 此释义来源于网络辞典。
never seen since ancient times
方滋未艾 still growing strong; on the up; 亘古未有 never seen since ancient times; unprecedented 旷古未闻 ; unprecedented; never before in the whole of history (idiom) ..
亘古未有,汉语成语,读音gèn gǔ wèi yǒu,意思是从古到今都不曾有过。出处《北齐书·王纮传》。