~ㄹ 줄 알다~ㄹ jul aldato know how toUsages of ~ㄹ jul alda이 버튼을 누를 줄 알아?i beoteuneul nureul jul ara?Do you know how to press this button?Elon.io is an online learning platformWe have an entire course teaching Korean grammar and vocabulary.Start learning Korean now