/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: EnZoon https://public.slidesharecdn.com/v2/images/profile-picture.png ²¹°ì²õÂá±ô»å³ó²¹°ìÂáñ±ô²õ