South Korea's bespectacled Hyeon Chung is proving to be a quick learner.
원문출처 : http://www.cnn.com/2018/01/24/tennis/australian-open-chung-sandgren-federer-halep-tennis/index.html
원문출처 : http://www.cnn.com/2018/01/24/tennis/australian-open-chung-sandgren-federer-halep-tennis/index.html