/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: hoisalan https://cdn.slidesharecdn.com/profile-photo-hoisalan-48x48.jpg?cb=1523486873 ß@ÊÇ Alan Hoi µÄÒ»¼Ò