/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: sylviehy https://cdn.slidesharecdn.com/profile-photo-sylviehy-48x48.jpg?cb=1523562635 ´ºÀ§ ÏÄ·¦ Çïíï ¶¬Ãß