/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: leungdanielyukhei https://cdn.slidesharecdn.com/profile-photo-leungdanielyukhei-48x48.jpg?cb=1431354339 ×ðÑÏ¡¢ÒâÒå¡¢×ÔÓÉ