/ http://www.slideshare.net/images/logo.gif / ºÝºÝߣShare feed for ºÝºÝߣshows by User: jiujinghongxi https://cdn.slidesharecdn.com/profile-photo-jiujinghongxi-48x48.jpg?cb=1523359541 I'm Hiroki Sakai. ÎÒÊǾƾ®ºêÏ£¡£