This paper analyzes the difference between back step training of traditional sprint and bent step technology of modern sprint from theoretical and practice.

从理论和实践上分析了传统短跑后蹬跑练习与现代“屈蹬式”短跑技术的不同特点。

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Drop-Knee :An exaggerated back-step where one knee is dropped toward the ground while the other is pointing up, resulting in a stable stemming position of the legs, especially on overhanging rock.

一只脚的膝盖朝下，另一只的朝上，使得双脚支撑得较好，尤其在悬岩的地方。

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But when you step back and listen to the composition, all these elements artfully come together.

VOA: special.2010.03.24

And there's some other ideas like that where we step back and really try to understand these investors and hopefully partners with entrepreneurs.

还有些其他观点，比如我们应该如何,退一步来真正试着去理解这些投资者,然后充满希望地与企业家合作。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

And wilderness experience allows us to step back, and say were we really or not in control of all this as much as we think we are.

野外的体验让我们缓慢了脚步，来看一看我们是否真的控制着一切,如同我们所想的一样。

普林斯顿公开课 - 人性课程节选

Prior to our co-op being created, insurers typically did not cover any accident outside the back step of the house.

CNN: Farmers say co-ops work for feed, seed and health care

The first green of evening, my mother had always called it, sitting on the back step at home, watching the Peruvian lilies and the montbretia fade into the gloaming.

NEWYORKER: The Cold Outside

Sometimes a step back is ultimately a step forward as long as that step is taking you in the right direction.

FORBES: When Not to Invest in Your 401(k)