Objects are the basic units of object-oriented programming. 对象是面向对象的编程中的基本单位。
By letting developers define objects as unbreakable mixtures of data and behavior, OO pushed system engineering to new heights. 通过让开发人员把目标定义成数据和行为不可分割的混合体,面向对象方法把系统工程推上了一个新高度。