人类的摩天大楼很壮观，一些动物“建筑师”的杰作也令人赞叹！这次，Jacky 用倒计数的方式为你介绍动物王国的六大建筑高手。Let's have a look at their great works! 看见这个小土堆了吗？It's a molehill. And this is the gate to a mole's home. If you want to see his rooms, you have to go underground...