Once the call returns for the current time step, you clear the forces applied to the objects from the last step, and then get the current position and Angle of your dynamic body.

一旦此调用针对当前时间步长返回，就可以清空上一步长施加到这些物体上的力，然后获得动态物体的当前方位和角度。

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Once one of the two poles in the world, Russia is now considered among the ranks of new rising powers — not a bad group to be in, but clearly a step down from its previous position in global affairs.

曾一度是世界两极中的一极，俄国现在被归为新兴国家行列。 虽然位居此行列也并不差，但比起以前，它在全球事务中的地位明显下降。

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Step 2: Summarize the position.

步骤二：给职位做个总结。

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In the future, leaders who believe that what they say carries more weight than anything they do, will be asked to step down from that position or simply step down.

FORBES: Body Language Will Make Or Break Future Leaders

He hedged afterward when asked about his announced plans to step down from his position.

WSJ: Menu

Simultaneously, Rogerswill step into the leadership position at MOG, the streaming music service Beats acquired in 2012.

ENGADGET: Beats Electronics announces project Daisy music service, appoints new CEO