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1 Stop Signal: Left Arm Extends Straight from Front to Upward, Palm Forward;　　善于以小见大的黄建新导演希望借助本片表达他新的思考———一种理想与现实的悖离。黄建新说3) Cancel Flexible Edge Ctrl + Shift + ClickThe 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天下英雄出我辈。叶峰和楚天歌是南华高中的两位超级帅哥，他们的英俊潇洒不相上下，对音乐的热爱难分伯仲，甚至连女生中的“楚迷”和“叶迷”也势均力敌、旗鼓相当。可是，不论在校内还是校外，他们俩永远处于势同水火的局面，永远想证明自己比对方更出色。因为他们都是心比天高的男孩，更因为他们遭遇了绝对精彩的女孩。 组建乐队一波三折，几起几落，想要成功必定要付出成倍的努力，最优秀的男孩凑到一起并不意味着最优秀的乐队从此搞定。叶峰要玩自己的音乐，楚天歌要让“HAPPY女生”乐队的灵魂人物麦云洁另眼相看，盖世爱要出风头，石小松要当一流鼓手，四个男孩还不懂团结的意义，理所当然闹了好多笑话，吃了好多苦头。 无论在音乐方面、情感方面，还是人际关系方面，少年们都要寻找突破口，杀出重围，实现自我。他们身上拥有精英少年的潜质，但是单打独斗都不能做到完美，唯有取长补短，精诚合作才是正途。乐队成员们在逆境中体会真诚，感受激 情，原来玩音乐不是仅仅为了满 足自己，回荡在校园里的歌声是所有同龄人的心声。只要我们动手快些，抢在安心稳定赵地之前建立起防御线，只需要三万兵力，就可以挡住齐国大军东进。