/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: YunjongLee1 https://cdn.slidesharecdn.com/profile-photo-YunjongLee1-48x48.jpg?cb=1523119289 안녕Çê˜ì„¸ìš”.