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英语翻译women are more involved in sports than they uesd to be,a

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英语翻译
women are more involved in sports than they uesd to be,and they are frequently beating their male counterparts in events like marathon running and long distance swimming.
what give women endurance?the answer seems to lie in female physiology.endurance depends not on muscle but on fat.Although a men usually has more muscles than a women,the women has relatively more fat.
The difference gives women at least two advantages in endurance contests.Because fat is much lighter than muscle,a
women has far less weight to carry around than a man of the asme age and height.The second advantage,however,is more important.Muscles need fuel to function.After the body uses its ready supply of fuel it must turn to fat.With their greater proportion of fat women simply have more fuel more fuel available.Their bodies are also more accustomed to fat and can do it more efficiently.
妇女比以往任何时候都频繁地参与体育运动,而且经常在大赛事如马拉松长跑和长距离游泳比赛中打败男性对手.
是什么给女人带来如此耐力?答案可能与女性生理机能有关.耐力取决于脂肪而非肌肉.尽管男性通常比女人拥有更多的肌肉,妇女却有相对较多的脂肪.
这种差别在耐力型比赛中赋予女性至少两个优点.由于脂肪比肌肉轻得多,女性的重量远远小于同一年龄和相同高度的男性.第二个优势更为重要.肌肉需要能量以发挥功能.身体消耗完自身的能量后,就开始转向脂肪.因此脂肪比重较大的胖女性就轻而易举地拥有更多的能量可用.她们的身体也更倾向于脂肪,可以更有效.