/ http://www.slideshare.net/images/logo.gif / 際際滷Share feed for 際際滷shows by User: AmaliaPellegrino https://cdn.slidesharecdn.com/profile-photo-AmaliaPellegrino-48x48.jpg?cb=1523309723 don't make something unless it is both necessary and useful but it is both necessary and useful, don't esitate to make it beautiful.