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문서 (149)

  • 실용영어회화집 step 1, 2 [3]
    실용영어회화집 step 1, 2 실용영어회화집_Step1.hwp 실용영어회화집_Step1.pdf 실용영어회화집_step2.hwp 실용영어회화집_Step2.pdf
    chanyi | 2014-04-10 16:08 | 조회 수 5492 | 추천 수 1
  • How to Make Your Own Solar Water Heater
    Solar water heaters are used around the world and are not very difficult to build. The system we are going to describe is based on a design developed some years ago in Afghanistan. Since then, it has ...
    chanyi | 2014-03-30 21:17 | 조회 수 694
  • Chimamanda Adichie: The danger of a single story
    0:11I'm a storyteller. And I would like to tell you a few personal stories about what I like to call "the danger of the single story." I grew up on a university campus in eastern Nigeria. My mother sa...
    chanyi | 2014-03-30 20:35 | 조회 수 1552
  • Living in a World With Facial Recognition
    A new study looks at privacy in a world where computers can increasingly recognize faces in a crowd or online. Alessandro Acquisti at Carnegie Mellon University's Heinz College in Pittsburgh, Pennsylv...
    chanyi | 2014-03-28 23:25 | 조회 수 600
  • Shane Koyczan: 'To This Day' ... for the bullied and beautiful
    By turn hilarious and haunting, poet Shane Koyczan puts his finger on the pulse of what it's like to be young and ... different. "To This Day," his spoken-word poem about bullying, captivated millions...
    chanyi | 2014-03-08 23:15 | 조회 수 1605
  • Three Sisters Follow in the Flight Path of a Family of Pilots
    The Smith family of Washington State loves to fly. KELLY SMITH: "My grandfather, however, he was a lieutenant colonel in the Army Air Corps and he flew everything. He flew helicopters, large aircraft,...
    chanyi | 2014-03-08 17:00 | 조회 수 627
  • Taking a Closer Look at the Future of Video Conferencing
    I'm Alex Villarreal with the VOA Special English Technology Report, from http://voaspecialenglish.com |http://facebook.com/voalearningenglish High-quality systems used in video conferencing are called...
    chanyi | 2014-03-02 23:01 | 조회 수 611
  • Vijay Kumar: Robots that fly ... and cooperate
    In his lab at Penn, Vijay Kumar and his team build flying quadrotors, small, agile robots that swarm, sense each other, and form ad hoc teams -- for construction, surveying disasters and far more. Goo...
    chanyi | 2014-02-07 12:48 | 조회 수 1362
  • Educational Technology: Not Just Computers
    This is the VOA Special English Education Report, fromhttp://voaspecialenglish.com We received a question from a listener about how American schools use educational technology. There is not a simple a...
    chanyi | 2014-02-01 20:22 | 조회 수 568
  • 'Passive' Homes Save Energy, Money
    This is the VOA Special English Economics Report, fromhttp://voaspecialenglish.com |http://facebook.com/voalearningenglish Heating and cooling equipment are the biggest users of energy in American hom...
    chanyi | 2014-01-27 13:59 | 조회 수 709
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