/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: BooYounLee https://cdn.slidesharecdn.com/profile-photo-BooYounLee-48x48.jpg?cb=1523385975 안녕하세요~! 반갑습니다. ^^