Doctor David Warriner asks, Question marathon runners.

David Werner 博士问，提问马拉松运动员。

Once a marathon runner, he now runs only down hospital halls.

以前他是马拉松选手，现在却只是从楼上跑到楼下的医院大厅。

A. A fitness coach. B. A chess player. C. A marathon runner.

A. 一个健身教练。 B. 国际象棋选手。 C. 一个马拉松运动员。

According to Dr Denny female marathon runners have, in effect, reached their peak.

丹尼博士表示马拉松女运动员实际上已经达到顶峰。

Marathon runners had to splash their way through part of the city on Sunday.

星期日，马拉松选手们不得不飞溅着水花奔跑在这个城市的一些地方。

I was watching the marathon runners on TV and I was so envious, she says.

“那个时候我看着电视上的马拉松选手觉得很羡慕他们，”她说。

The tight timetable troubled him; but he was not a keen marathon runner for nothing.

紧张的时间表给他添了麻烦，但拉森不是一个只顾跑步的马拉松运动员。

Now, a person can have both a mentality of a marathon runner and a sprinter.

一个人既有马拉松运动员的心态，也有短跑运动员的心态。

In marathons, runners often receive race bibs – a piece of paper with a number on it to identify the runner.

在马拉松比赛中，参赛者通常会收到比赛号码布——一张上面有号码的纸，用来识别参赛者。

There's only one modern reptile that can even run on two legs, the jesus christ lizard, and it's a sprinter than a marathon runner.

只有一种现代爬行动物可以用两条腿跑步，蛇怪蜥蜴，而它更多的是短跑运动员而非马拉松运动员。

While Epicyon and other bone-crushers were getting bigger and heavier, canines slowly developed into cross-country marathon runners.

当 Epicyon 和其他碎骨机变得越来越大和越来越重时，犬科动物慢慢发展成为越野马拉松赛跑者。

Hyponatremia is common in marathon runners who drink too much too fast during a race without also providing enough sodium to balance out their blood.

低钠血症常见于跑马拉松的人群身上。有的人在跑马拉松时喝水喝得太多太快，同时还没有补充足够的钠来平衡血液中的钠水平。

For example, a marathon runner might have a normal resting heart rate closer to 50 beats per minute.

例如，马拉松运动员的正常静息心率可能接近每分钟50次。

This year's challenge will feature a far more elite field, which includes Ryan Hall, America's fastest marathon runner.

今年的挑战赛将有更多的精英参赛选手参加，其中包括美国跑得最快的马拉松选手瑞恩·霍尔 (Ryan Hall)。

But Singh, born in India, is no spring chicken – he's 100 years old and his recent feat has made him the world's oldest marathon runner.

不过，出生于印度的辛格年纪可不小了——他100岁了，他这次的马拉松成绩使他成为了世界上年龄最大的马拉松选手。

One study from 1992 had female marathon runners drawing level with men by 1998, to complete the 42.195km course in just under two hours and two minutes.

据1992年的一项研究，到了1998年女马拉松运动员将与男马拉松运动员统一标准，即在2小时2分以内跑完42.195公里。

Overall, the reviewers didn't recommend taking vitamin C unless you're undergoing extreme physical stress—like if you're a marathon runner or doing military training in the subarctic.

总的来说，研究这并不建议服用维他命C，除非你感觉正在经历极度的身体压力——比如说你是马拉松跑步运动员，或者是在亚北极做军事训练。

The battery serves as a marathon runner, providing a steady discharge over a long distance. The supercapacitor is a sprinter, unleashing a large amount of energy rapidly.

电池是马拉松运动员，能够在长途中提供足够的电量。而超级电容器是短跑运动员，能够在瞬间释放大量能量。

The world’s oldest marathon runner says that while he is retiring from competitive running, he is not hanging up his running shoes.

这位世界上最年长的马拉松运动员表示， 虽然他正在退出竞技比赛， 但他并没有挂起跑鞋。

Marial a marathon runner said the federation announced his suspension when he refused to hand over a training scholarship he had been awarded by the internaional Olympic committee.

马拉松运动员马里亚称由于自己拒绝上交国际奥委会办法的培训奖学金而被该联合国宣布暂停其资格。