Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
대학에서 한 학기 동안 15단위시간을 이수해야 합니다.daehakeseo han hakgi dongan 15 danwisi-gan-eul isuhaya hamnida.You must complete 15 credit hours during a semester at the university.