双语例句原声例句
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This object is hanging there, it's not being accelerated so the net acceleration must be zero.
物体无加速度地，悬挂在此，合力为零，加速度亦为零。
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If there is a net torque, there will be an angular acceleration, and that's what you see.
若存在净转矩，就会产生角加速度，正如你们所见。
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The direction of the acceleration is the direction of the net force.
加速度的方向与合力的方向相同。
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So, a massless body cannot have a net force on it, because the acceleration of the rope cannot be infinite.
所以没有质量的物体不会受到力,因为绳子的加速度不可能是无穷大
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