/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: yixinwang1218 https://cdn.slidesharecdn.com/profile-photo-yixinwang1218-48x48.jpg?cb=1523470229 ÎÞÊôÐÔ¡£ ÎÞ¿ò¼Ü¡£ ÎÞ·¶Î§¡£ ÄãÓÐʲô i have nth /no tengo nada nada....