提供TED演講的影片，如果原站有提供中文字幕，也可以切換字幕觀看。原文說明如下 The official TED app for iPhone, iPad, and iPod touch presents talks from some of the world's most fascinating people: education radicals, tech geniuses, medical mavericks, business gurus and music legends. Find more than 1,400 TEDTalk videos (with more added each week) on the official TED app -- now for both iPad and iPhone. The entire library is at your fingertips to browse at any time, even when you’re not online. Watch TEDTalks with subtitles in over 90 languages directly on your device through our new video player, or use AirPlay to watch them on your home entertainment system. Curate your own playlist. Download full videos to your device and watch them when you’re offline. Listen to an on-demand playlist of TEDTalks audio at any time. The TED app updates almost every day with new talks from TED events around the world. Sort the featured library by recency or popularity. Browse talks by tags, themes, or language. Share your favorite talks with your friends. Tell us how much time you have and let us guide you through a delightful playlist.