際際滷shows by User: iboribbon / http://www.slideshare.net/images/logo.gif 際際滷shows by User: iboribbon / 際際滷Share feed for 際際滷shows by User: iboribbon https://cdn.slidesharecdn.com/profile-photo-iboribbon-48x48.jpg?cb=1574925967 o(''')o iBo Ribbon Science Teaching KU72 (≠垂≠)