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
두성조는 한국어 발음에서 중요한 역할을 합니다.duseongjoneun hangug-eo balam-eseo jungyohan yeoghal-eul hamnida.The head tone plays an important role in Korean pronunciation.