Next, create your dynamic body, which has a position, initial linear velocity, and angle.

接下来，创建动态物体，它具有方位、初始线速度和角度。

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This setup is similar to the creation of the ground body, except that you define additional attributes for the dynamic body.

设置的过程与地面物体的创建相似，只不过需要为动态物体定义额外的一些属性。

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The earth is a dynamic body .

地球是一个能动的天体。

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"Besides life-saving applications in fire and rescue, the potential to record dynamic scenes of a human body could have a variety of other biomedical uses including studying or monitoring breathing, cardiac beat detection and analysis, or measurement of body deformation due to various stresses during exercise, " Ferraro says.

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But Harvard stayed financially healthy during the lean years of the Depression partly by enlarging its undergraduate student body--two dynamic presidents during that period, A. Lawrence Lowell and James B.

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This is because they rely on static models of weight loss rather than dynamic models that account for the way the body adjusts to reducing food intake by reducing energy expenditure.

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