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这些都是表现现象，不过是赵王歇颇有形势，利用陈余罢了。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看着结结巴巴的李跛子，马氏心中暗自发笑，不露声色地沉下脸，说道：莫非李老板看不起我们吴家？李跛子大惊道：没有，没有，怎么会呢？那是为何？马氏故作疑问，迟疑片刻道：莫非李老板还惦记着，找那个谋反作乱的小贼为婿吗？官府最紧可查的紧呢？若是县暑的大人们知道了，那还了得？李跛子更急了，急的张不开嘴巴，更谈不上回答。Macro commands: d, df, f, df, d, db, b3Adapter mode:蓝屏(徐子珊)的男友徐风(陈键锋)失踪一年后，巡捕吕涛(黄宗泽)发现风原来已经死了，领遗体的人更是屏自己！不久，风突然出现，叫事情更加扑朔迷离，更叫屏和风已经萌芽的感情胶着。