对象：对象是类的一个实例，有状态和行为。例如，一条狗是一个对象，它的状态有：颜色、名字、品种；行为有：摇尾巴、叫、吃等。(Object: an object is an instance of a class with state and behavior. For example, a dog is an object that has the status of color, name, variety, behavior: wagging its tail, calling, eating, etc..)