According to her research, runners hit the ground with as much as four times their body weight per step, while race walkers, who do not leave the ground, create only about 1.4 times their body weight with each step.

她的研究表明，人在跑步时，脚每次着地对地面的压力相当于自身体重的四倍，而竞走者不完全离开地面，其每步的压力只有自身体重的1.4倍。

youdao

The other runners and I feel that we have broken the back of this; barring any unfortunate accidents the remaining eight of us should be running into New York in less than four weeks.

我和其它选手都感觉到，我们已经胜券在握，只要不出意外，我们八个人在四个星期以内就能跑到纽约。

youdao

We'll focus first on the industry's four front-runners, then have a look at the options that will color your buying decision.

我们首先关注的是这个产业的四位佼佼者，然后再看看这些选择会不会为你的购买决定增色。

youdao

A month earlier,twenty-six year old Zamperini had been one of the greatest runners in the world, expected by many to be the first to break the four-minute mile, one of the most celebrated barriers in sport.

VOA: special.2011.05.04

Benevento and his trio cover Deerhoof's "Twin Killers, " a song he heard when guitarist Charlie Hunter introduced him to the album The Runners Four.

NPR: Marco Benevento: Jazz Not Jazz

The four runners up in this category included a game called Neutron Craft by Bradley Pollard, aged 18, , a web server called Pancake by Yussuf Khalil (15), a file synchroniser built by Hannes Westermann, also 17, called BerryBox and a music player called RasPod from 17-year-old Aneesh Dogra.

BBC: Time-lapse code wins Raspberry Pi contest

An Iowa poll published over the weekend shows Edwards is in a tight race with the four front-runners.

CNN: Edwards, Kucinich agree to share support in Iowa caucuses