Much like a bowling pin that wobbles back and forth yet doesn't fall, a penguin's body is carried forward by kinetic energy.
Much like a bowling pin that wobbles back and forth yet doesn't fall, a penguin's body is carried forward by kinetic energy.
企鹅的身体非常类似一个来回摇摆却不会倒下的保龄球瓶，被动能带动向前。