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张无忌被掳走，张翠山夫妇十分气愤以及伤心，但也只能先回武当山，然后再做打算。2014年5月16日-6月1日，亮相CCTV8（中央电视台电视剧频道）《家庭剧场》。不能因为我是仁医，就可以无限地做善事。五月初，南雀国，孔雀城王宫一间大殿内，青鸾公主看了军中情报，颓然对南灵王道：叔父，靖军已经制住瘟疫了。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两人去吃晚饭的时候，神情都十分诡异。