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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.该剧讲述一次外星人的攻击让地球上的人类几乎消灭殆尽，只有少数人类还在为生存而战。艾米丽(埃德加-琼斯饰)发现她能与外星人产生奇怪的个人联系。在第二季中，入侵者是人类的可能性弄得所有人晕头转向，等待他们的是一场夺回地球的紧张战斗。霍华德·欧尔曼(《梅林传奇》)操刀剧本。该 剧将于6月6日登陆EPIX。好了，我别的不说，就两句。还在怪我宠他？吴凌珑咬牙问道。Shutter speed is one of the important factors that affect the shooting effect.秦瀚，快来看，下大雪了。Rich learning content and resources