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这时，青莲走进来，靠在葫芦身边听娘儿几个说话。[WeChat] Two WeChat are online at the same time, one is a strong man in the workplace and one is a literary youth.Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:　　尽管遭到了朋友们的强烈反对，李登布罗克教授还是带着侄子毅然决然地出发了。两人的旅途始于德国汉堡，之后，来自冰岛的汉斯（Peter Ronson 饰）成为了他们可靠的向导。三人来到了斯奈菲尔火山口，从此进入地表之下，在长达三个月的旅程中经历了种种光怪陆离的现象，遇见了无数千奇百怪的动植物，甚至邂逅了神秘的种族。　　如此，多次挑战大洞穴的冒险者们，众人都看向她，她忙止住，问大苞谷道：怎么你没……比试呢？大苞谷傲然道：没人敢跟我比。