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第三集The Flash：Season 6 -Episode 9Crisis on Infinite Earths: Part Three李敬文认真道：我说做梦的时候才能日进斗金。延续第一季的剧情，讲述了立志35岁提前退休的辛凡才刚踏出第一步就被现实打败了，花千金也面临店铺经营困扰无暇顾及感情......越来越多有趣的人，加入了这个热闹的小团体，这群年轻人依旧续写着他们的生活，继续上演着关于爱、温暖、奋斗与成长的故事。你不是在教她们烧菜？陈启好奇道。他们正好来到了一宗车祸的现场，被送进了医院，他们被眼前的一切吓傻了。机缘巧合之下，雍正竟然得到了刚到香港的内地人李大虾的身份，被亲戚带回了家中。四娘则因为好身手被武术教练收留了，更取得了身份证明。The 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.