Breakdown of seonsaengnimi sueobeseo jasehi seolmyeonghaeyo.
~이~i
subject particle
~에서~eseo
location particle
수업sueop
class
선생님seonsaengnim
teacher
자세히jasehi
in detail
설명하다seolmyeonghada
to explain
Elon.io is an online learning platform
We have an entire course teaching Korean grammar and vocabulary.