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被称之为「蓝色城区」的未来城市－－在那里，有个每到晚上就停电而被黑暗笼罩的城镇－－「夜之镇」。玉米被这么多人盯着，仿佛要看穿他的五脏六腑。…,赵地现在已经平定。范依兰也开心到：这下爹爹总算是放心了。日本颁布新法令，死囚可以由被害者家属亲手裁决，复仇者无须承担任何责任，而这一切必须以“真人秀”的形式完成。（中谷美紀 、高杉亘饰）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可很明显的事实摆在眼前，刘邦和项羽都不打算给自己这个机会。