So when the children see this, they say, "Ah! Acceleration," remembering back four months when they did their cars sideways, and they start measuring to find out what kind of acceleration it is.
孩子们看到这个 他们就会说 这不就是加速吗 因为他们记得四个月前做过汽车的实验 并且动手去测量 看到底加速是如何演进的