运动员一定要保持体型。
通过结合这三个因素，拉波波特创造出一个数学公式，这个公式可以让任何体型的运动员知道跑多远和多快才能避免‘速度障碍’。
By combining these factors, Rapoport created a mathematical model of how long and how fast runners of any size can go without hitting the wall.
力量型泳者多数是男性，拥有健硕的体型，或曾玩过诸如足球橄榄球的团队运动。
The Arnie is often male, of strong build and commonly with a background in team sports such as football and rugby.
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