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事物的多或少的概念,是通过比较形成的.如果两个集合的元素,都能完全罗列出来,往往很容易比较出哪个集合的元素多,哪个集合的元素少.例如教室里的桌子都排列整齐了,学生一个人坐一个位置,如果所有学生全都坐下之后还有位子空着,那么桌子比学生多;如果坐满座后至少还有一个学生没有座位.那就表示学生多于桌子;如果既没有空桌子,也没学生站着,那就表示学生与桌子数目相等.对于在教室里
The concept of more or less things is formed through comparison. If the elements of the two sets can be completely listed, it is often easy to compare which set of elements is more and which set of elements are less. For example, the tables in the classroom are Neatly arranged, the students sit in one position. If all the students are seated and there are still empty seats, there are more tables than students. If there are at least one student after the full seats, there will be no seats. That means more students than the table; If neither the desk nor the student stands, it means that the student is equal to the number of tables. For the classroom