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《烟花》讲述了小学生典道与佑价等同伴们就烟花升腾而起时是扁是圆展开争论，无果后，众人困惑起来，为了将困惑解决，他们决定趁夏季花火大会的机会去燃放烟花的灯塔上一探究竟的故事。19丧服的女孩Toru Kazama Asuka SuitaThe above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.正义联盟集结地球上所有超级英雄一起对抗强大的反派达克赛德。要不是为了支持国产，就算给他钱，他也懒得去玩。……何员外表情相当尴尬，客气而已，真让我自己来啊。