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
자음의 소리는 발음할 때 중요한 역할을 합니다.jaeum-ui sorineun bareumhal ttae jungyohan yeokhal-eul hamnida.The sound of a consonant plays an important role when pronouncing.