他们分别在杜塞尔多夫和波鸿附近被捕。
德国波鸿-鲁尔大学的科学家揭开了这个奥秘。
Scientists at Germany's Ruhr-University Bochum are figuring out how they do it.
2011年6月30日,在德国波鸿的一场比赛中,加拿大球员Kaylyn Kyle和法国球员Gaetane Thiney(左)分别跳跃起来去争夺足球。
Kaylyn Kyle of Canada and Gaetane Thiney (left) of France jump for the ball during their match in Bochum, Germany June 30, 2011. (Ina Fassbender/Reuters)
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