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在一间教学素质低下的学校里，有一个不成文的传统：学生们凡是遇到了争执，都不能告诉老师家长，只能自己用拳头解决。石头是最能打的一个同学，一次帮助富家子Edward解围，彼此成为朋友，二人也因此得罪了学校里的好战分子。阿凤一直暗恋既帅气学习有出色的Edward，而Edward认为学生最紧要是学习，会考时间逼近，Edward便义务帮助石头与阿凤补习。由于家境富有，Edward竟然在考试当天被绑架了，石头决心把他救回……陆炳病了。Dependence Inversion Principle (DIP) means that abstraction should not depend on details, and details should depend on abstraction, which is the proposed "interface-oriented programming, not implementation-oriented programming". This can reduce the coupling between customers and specific implementations.In the settings, notifications, messages and then turn off the button displayed on the lock screenOriginated in the Swiss Alps, it is a winter sport that takes wooden or metal skateboards to slide and turn at high speed on special ice and snow routes. It is divided into two types: sled with rudder and sled without rudder.The famous lever squat belt. It is characterized by convenient wearing, but still belongs to single row type. In terms of strength and stability, it is not better than double rows of the same specification.王尚书大喝住口，截断二人争论，威严地吩咐道：一齐带走。