https://speakerdeck.com/hanfeisun 2013-05-06 11:18:45 -0400 How AT&T changes our lives Origin of AT&T Downfall of AT&T 同济大学，孙翰菲，英语课用，图片来自互联网 How AT&T changes our lives Origin of AT&T Downfall of AT&T 同济大学，孙翰菲，英语课用，图片来自互联网 Mon, 06 May 2013 00:00:00 -0400 https://speakerdeck.com/hanfeisun/a-story-of-at-and-t https://speakerdeck.com/hanfeisun/a-story-of-at-and-t