Why do ラ (ra), リ (ri), ル (ru), レ (re) and ロ (ro) sometimes sound like they begin with a /d/ sound? And why are they used sometimes for an /l/ sound?

Comments

언어 선생님 이신가요?

Are you a language teacher?

Flag fr Flag es Flag en 영어 Flag it Flag de Flag pt Flag ko 한국의