People must be wondering about how a little child can know the parents’ feelings. In fact, though they are small, even can’t walk, they are indeed smart. The children will watch their parents’ reaction. If the parents get angry, they know that they can’t do it again. If the parents get nervous, then the children will repeat the action to catch attention. 
人们一定想知道一个很小的小孩是如何知道父母的感受的。事实上，尽管他们很小，甚至还不能走路，但是他们实际上是很聪明的。孩子们会关注父母的反应，如果父母生气，他们知道，不能再做这样的事情了。如果父母感到紧张，那么孩子们就会重复这样的动作来吸引他们的注意。