/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: smartree496 https://cdn.slidesharecdn.com/profile-photo-smartree496-48x48.jpg?cb=1658932067 »¯Ñ§ôßÉúÎﻯѧ±ÏÒµ