Word~어야~eoyaMeaningonly ifPart of speechconjunctionPronunciationCourseHardcore KoreanLessonLesson 29Usages of ~eoya전원 버튼을 길게 눌러야 화면이 켜져.jeonwon beoteuneul gilge nulleoya hwamyeoni kyeojyeo.You need to press and hold the power button for the screen to turn on.