際際滷shows by User: oliverz111 / http://www.slideshare.net/images/logo.gif 際際滷shows by User: oliverz111 / 際際滷Share feed for 際際滷shows by User: oliverz111 https://cdn.slidesharecdn.com/profile-photo-oliverz111-48x48.jpg?cb=1523326071 Hey! I study at the University of Pennsylvania.