ºÝºÝߣshows by User: vnt888 / http://www.slideshare.net/images/logo.gif ºÝºÝߣshows by User: vnt888 / ºÝºÝߣShare feed for ºÝºÝߣshows by User: vnt888 https://cdn.slidesharecdn.com/profile-photo-vnt888-48x48.jpg?cb=1523436908 µÍµ÷µ½²»ÐÐ!