ºÝºÝߣshows by User: xiaobai2 / http://www.slideshare.net/images/logo.gif ºÝºÝߣshows by User: xiaobai2 / ºÝºÝߣShare feed for ºÝºÝߣshows by User: xiaobai2 https://public.slidesharecdn.com/v2/images/profile-picture.png i endorse 白。