/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: xenialynnliu https://cdn.slidesharecdn.com/profile-photo-xenialynnliu-48x48.jpg?cb=1523508536 ÈçÂäÒ¶ËæË®Ëæ·çƯ