Akira Yaegashi, Edgar Sosa, challenger. 挑戰者

Japanese champion Akira Yaegashi, (l), gets a punch from Mexican challenger Edgar Sosa in the 10th round of their WBC flyweight boxing title bout in Tokyo. Yaegashi defended his world title by a unanimous decision.
December 6, 2013  http://www.voanews.com/media/photogallery/day-in-photos-december-6-2013/1805439.html

challenger是什么意思__沪江小D英语翻译
n. 挑战者，提出挑战，夺标者
http://dict.hjenglish.com/w/challenger

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