Another key element to running, is run with a... land with a pretty flat foot.
另外一个跑步的关键元素，是用一个…相当平坦的脚型来着地。
After running in the marathon, she was flat out for a week.
她参加马拉松比赛后一星期都疲惫不堪。
Above, the flat roof is used as a playground and features a running track.
顶部设计了屋顶平台，用作操场并设有跑道。
Hill running strengthens those areas more than running on flat ground.
与跑平地相比，跑坡道能够更能够增强这些区域。
Flat cable for travel running, slipping trolley imitated from import model.
走线用扁平电缆，仿进口滑线小车等。
Flat cable for travel running, slipping trolley imitated from import model.
走线用扁平电缆，仿进口滑线小车等。
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