/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: smilecal https://cdn.slidesharecdn.com/profile-photo-smilecal-48x48.jpg?cb=1523510797 ÂýÂý³¯Ä¿˜ËÇ°ßM doing something