This is the 19750th most frequent Korean word.
에르노는
"에르노는" does not have a standalone meaning in Korean; it may be a proper noun or name.
에르노는 is used as the subject emphasizing the person, showing their action, studying abroad in Korea.
에르노는 한국에서 유학하고 있어요.
Erno is studying abroad in Korea.
The word 에르노는 identifies the subject who enjoys reading books.
에르노는 책을 매우 좋아합니다.
Erno likes books very much.
Here, 에르노는 indicates that Erno performed the activity of walking in the park.