teacher: If I cut a beefsteak in half and then cut the half in half, what do I get?Tommy: Quarters.Teacher: And then if I cut it twice again?Tommy: Hamburger.
老师:如果我把一块牛排切成两半的两半,我能得到几块儿?汤米:四块。老师:那我要是再切两次,我能得到什么呢?汤米:汉堡。