Shortening your stride will prevent your feet from landing in front of your body, which causes the muscles of your lower leg, specifically your knees and shins, to have to pull your body forward.

缩短你的跨步可以防止你的脚在你身体前方着地，这也是你的小腿，尤其是膝盖和胫部的肌肉把你身体拉向前的原因。

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This delay can give the competition the leg up it needs to pull ahead of your organization in the marketplace.

拖延的话会让竞争者抢先起步，因为竞争者需要在市场中和你的组织拉开距离。

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Humans turn a screw to make it move along its length, but the weevil's muscles pull along the length of its leg to make it turn.

人类旋转螺丝使其前进，而象鼻虫的肌肉沿着腿的方向牵拉，使其旋转。

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But Belgium's Xavier Malisse was forced to pull out of the eight-man round-robin tournament after retiring with a leg injury against Frenchman Sebastien Grosjean .

BBC: Safin, Ferrero ease through