際際滷shows by User: nice1808 / http://www.slideshare.net/images/logo.gif 際際滷shows by User: nice1808 / 際際滷Share feed for 際際滷shows by User: nice1808 https://cdn.slidesharecdn.com/profile-photo-nice1808-48x48.jpg?cb=1523389368 Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.