The final part looks at the magnet force, including how to animate it, and how to link its position to a rigid body that is being simulated.
最后部分着眼于磁铁的力量，包括如何制作动画，以及如何连接它的位置，一个刚体正在模拟。
Shanghai, being the most active city in Asia, is animate and energetic.
上海，作为亚洲最具活力的城市，洋溢着无限生机。
Shanghai, being the most active city in Asia, is animate and energetic.
上海，作为亚洲最具活力的城市，洋溢着无限生机。
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