无所不知[wú suǒ bù zhī]
词典omniscient：无所不知的。
词典know everything：无所不知。
词典know every subject [profession]
词典There is nothing which one does not know.：无所不知。
无所不知[wú suǒ bù zhī]
know everything; know every subject [profession]; omniscient; There is nothing which one does not know.