His bottom waggles in a funny way when he walks .

他走路时臀部扭来扭去，很可笑。

A more complex behavior is imitation : if dad sticks out his tongue and waggles it , the infant mimics his gesture by combining visual information with proprioceptive feedback from its own movements .

一个更复杂的行为就是模仿：如果爸爸伸出舌头然后摇晃，婴儿就通过结合了视觉信息的来自于他自己动作的自身固有反馈模仿他的动作。