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Appendix B杨长帆大笑道，纳妾是吧？……我本分话吧。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.我又不像你，还认得字，能教红椒她们。《星际迷航：发现号》宣布续订第3季，并加入Michelle Paradise(《初代吸血鬼》《南国医恋》)，和Alex Kurtzman一起担任运作人。第3季2020年上线。　　许浚森（陈展鹏饰）是O记精英干探，勇武能干，深受上司器重及战友欣赏，但他最终梦想却是加入飞虎队。另一名O记精英干探沈韦力（黄智贤饰），有着精明头脑及丰富经验。二人处事方式虽截然不同，但惺惺相惜，彼此互补不足。