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在美国西岸的一个小镇中，居民们受土地开发者的胁迫，必须迁离家园，除非他们有足够的钱可以买下土地。此时，米基与布莱登两兄弟，在一间阁楼的旧箱子中，发现了一张十七世纪的海盗藏宝图，于是两兄弟召集了其他的朋友，他们自称为“七小宝”，希望能找到传说中的宝藏，籍此保住家园。‘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看着夏正，汪直叹了口气，此人一身正气，挺拔而立，颇有君子之风，若他是自己亲儿子该多好。戚夫人这便要转身离去。　　在工作中，布里奇特结识了单身妈妈妮娜（奎恩·拉提法 Queen Latifah 饰）和充满个性的杰姬（凯蒂·霍尔姆斯 Katie Holmes 饰）。每天面对着成捆的钞票，三个被贫穷逼迫的走投无路的女人打起了歪主意。