The instructor made him shake his head, swing his arms, stretch his neck and bend his knees.

教练让他摇头，摆动手臂，伸展脖子，弯曲膝盖。

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Southbank, at an eastern bend in the Thames, is the center of British skateboarding, where the continuous crashing of skateboards left your head ringing.

位于泰晤士河东部的一个转弯处的南岸，是英国滑板运动的中心，在这里，滑板不断的撞击让你的头嗡嗡作响。

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As you deepen the bend of the knees, maintain a straight line from the top of your head to your tailbone.

当你加深双膝的弯曲幅度是，保持头顶到尾骨一条直线.

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From Bend head southeast to Harney County, one of the least densely populated counties in the U.S., with 0.7 people per square mile in an area about the size of Maryland.

FORBES: Magazine Article

Bend your knees and duck down, rolling your head in a 'U'shape under the punch from 'inside' to 'out.

BBC: DEFENCE