In studying the world records of sporting events like the marathon, the mile and 10,000 - and 5,000-meter RACES throughout the last 125 years, Dr. Joyner says there are key primary factors at play.
在研究了过去125年来马拉松、一哩、10000米、5000米等运动的世界纪录后，Joyner博士说其中有首要关键的因素在起作用。
In studying the world records of sporting events like the marathon, the mile and 10,000 - and 5,000-meter RACES throughout the last 125 years, Dr. Joyner says there are key primary factors at play.
在研究了过去125年来马拉松、一哩、10000米、5000米等运动的世界纪录后，Joyner博士说其中有首要关键的因素在起作用。
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