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物体A绑定物体B 之后，物体A怎么做周期函数？
那就不要用绑定，绑定会锁位置，虽然软连接可以稍微动一下，但应该不是你想要的效果可以使用周期函数的值，直接设置A物体的位置，大小等选只变化周期函数的值然后在事件里设置A物体的位置效果如下
