/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: NelsonYKKwok https://cdn.slidesharecdn.com/profile-photo-NelsonYKKwok-48x48.jpg?cb=1639639826 ÈôÒªÉú»îºÃ, ÎðÒªÀûÎïÆÖ