The veriation of swinging leg's knee angle should be controlled.

应控制摆动腿的膝角的最小角度。

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Young female long jump two levels of athletes instantaneous and take off in the process in the board to swing the leg knee Angle oversized folds not tightly.

少年女子跳远二级运动员在着板瞬间和起跳过程中摆动腿膝角过大，折叠不紧。

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Shupletsov was more of an active skier who was able ski with a lot of knee Angle and absorption. Shupletsov appeared to actively pull his feet underneath his center of mass.

Shupletsov是一个较主动的选手，他在滑雪时有更大的膝盖角度和吸收，看上去他能更主动的将膝盖拉回到身体中心的下方。

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When he landed, his right leg snapped midway between his ankle and knee, the bone skewing almost at a right angle.

NPR: Louisville Beats Duke 85-63 To Reach Final Four

You're feeling something, all right, but you might try responding to your world at a level that couldn't be duplicated by your knee when it's hit at the proper angle with a rubber mallet.

CNN: 'Lethal Weapon 4': Saying nothing, but loudly

Viewed from this angle, libertarianism is actually far more hostile to knee-jerk plutocracy than either Krugman or Kotkin might think.

FORBES: Preachers, Plutocrats, and Grover Norquist: But Where's The GOP Soul?