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这些事，小葱都没有参与了，她在庆功宴后，就被引去赵家，拜见赵夫人，与香荽姐妹相聚，其欢喜悲感也无需细说。Start building:雪莲忽闪着大眼睛道：我没偏心。The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu　　而广州城内，唯一令飞鸿母子既敬且畏的就只有广东十虎之一，宝芝林馆主，亦是飞鸿的父亲——黄麒英！所谓一物治一物，黄麒英虽是一家之主，亦有令他头痛的人物，她便是十三姨！塞不进，差点栽了个跟头。