/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: JongsunChoi https://cdn.slidesharecdn.com/profile-photo-JongsunChoi-48x48.jpg?cb=1667544728 "Today is a gift. That's why we call it the present." Have a good time. every~~on~e! www.soongsil.ac.kr/