<正>整数是人们生活中最常用到的数字,也是我们在学习数学时最早接触的概念之一。你知道不同类型的整数在英语中是怎么表达的吗?An integer is a whole number that can be positive, negative, or zero. For example, 21, 4, 0,and-2048 are integers, while 9.75, 5.1/2, and 21/2 are not.