如果我们要使运动加速，就得施加某种力。
Should we want to accelerate the motion, we should have to apply some force.
对手结构和关节运动作了深人地分析，并建立了对其施加约束的手模型。
The hand structure and joint motion is analysed. A hand model is then established.
为了使物体运动得更快，必须对它再施加一个力。
In order that a body moves faster, an additional force must be applied to it.
为了使物体运动得更快，必须对它再施加一个力。
In order that a body moves faster, an additional force must be applied to it.
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