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Channel / Source: TEDx Talks

Title: ë³´ì´ì§€ ì•ŠëŠ” 'ì‚¬ìš©ìž ê²½í—˜'ì„ ë””ìžì¸í•˜ë‹¤ | Jongwon Lee | TEDxSogangU

Published: 2017-10-10

Source: https://www.youtube.com/watch?v=NDbGcmqJvzU