耐力跑是有氧运动，马拉松倾向保持跑在开始累积乳酸的运动程度之下，亦即所谓的氧债门槛(AT)。

Endurance RACES are aerobic RACES. Marathons tend to be run at just below the level where you start to accumulate lactic acid, which is known as the anaerobic threshold (at).

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该项运动普及程度的大幅提高带来了更多要求更严格安全法规的呼声。

The boom in the sport's popularity has meant more calls for stricter safety regulations.

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然而，另一些人认为，体育运动的成功在很大程度上取决于心态。

Other people believe, however, the success of sport depends as much on mental attitude.

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Rather, what determines the size in the brain is the extent to which either they have motor command over it or sensory control.

相反,对运动的控制程度,或是对感觉的控制程度,决定了身体部位在大脑中对应区域的大小

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