Chinese edit

 
to not know; to have no idea of; to be ignorant of
to not know; to have no idea of; to be ignorant of; to wonder if
therefore; so; consequently
trad. (不知所以) 不知 所以
simp. #(不知所以) 不知 所以

Pronunciation edit


Idiom edit

不知所以

  1. to now know why it is so; to not know the reason