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xiang hai zuo na yang you yong
Pages: 53
Year: Issue:  6
Journal: Knowledge is Power

Abstract:  想在海洋里自由自在地游泳吗?可是传说中那些海洋肉食动物有些让人胆战心惊.要想享受游泳的快感而没有被追食的忧虑,就得比那些海洋肉食动物游得更快.最近,希腊研究人员发明了像是海豚尾巴的脚部辅助游泳器,能够帮助你的打水动作更协调,并产生推力,使你游起泳来比奥运金牌选手菲尔普斯还快.
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