Liu Xiang of China grimaces in pain during his warm-up before the start of his 110m hurdles heat of the athletics competition in the National Stadium at the Beijing 2008 Olympic Games August 18, 2008.
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- 2008年8月18日北京奥运会国家体育场,田径类110米栏项目预赛开始前,中国选手刘翔热身时流露出痛苦的表情。