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This is the basis of the opening and closing principle, and the specific content: interface-oriented programming, relying on abstraction rather than concreteness. When a specific class is used when writing code, it does not interact with the specific class, but interacts with the upper interface of the specific class.《生死钟声》：一九三一年的春天，上海外白渡桥上人来人往，拥挤一片。远处，海关钟楼正点报时的钟声正在敲响，看似平静的外滩，危机四伏…… 国民党中统的重要领导瞿言白在与宿敌中共特科领导人罗樟荣的对决中因为情报的流失，始终处于被动，来往密电被潜伏在中统内部的共产党频频破译，使得行动受阻，让瞿言白大为光火。 国民党启用了新的密码本，失去密电情报的中共，无异于盲人瞎马行于深山栈道之上，一步走错都是万丈深渊。基于此，中央指示潜伏在瞿言白身边担任机要秘书的谢云亭和上海站的刘祥义，要相互配合不惜一切代价拿到新的密码。 与此同时，因为一时冲动导致特科队在与瞿言白斗争中损失惨重的罗樟荣被派遣武汉，他不满中央对他的批评，决心要在武汉搞一次有影响的大爆炸，以显示共产党的力量，将功赎罪。虽然武汉方面的同志审时度势，提出不同意见，但罗樟荣却以中共政治局候补委员和中央特科领导人的身份，强行...Human's classification consciousness and practice on vegetation, animals and other organisms have existed since ancient times. They existed in ancient China and ancient Greece, and developed into a science-taxonomy. However, the early classification was mainly based on morphology, such as the shape of roots, stems and leaves. Taxonomy based on morphology is the oldest discipline in biology, and the earliest phyla, classes, orders, families, genera and species basically came from here. Taxonomy in the general sense refers to a specialized discipline that identifies, identifies, describes, names and classifies organisms. The task and purpose of taxonomy can be divided into two parts:Security executives are never willing to talk about these attacks because they do not want their remarks to attract more attention to the enterprise. They even worry that providing basic information on defense strategies alone will be enough to attract attackers to come and find security vulnerabilities.乌丸千岁（千本木彩花 配音）拥有着人见人爱的可爱外表，然而内心里却有着和外貌相差了十万八千里的黑暗和对人类的轻蔑。千岁想要成为一名声优，为了实现理想，她进入了声优事务所工作，却发现展现在眼前的，是一个充满了明争暗斗和尔虞我诈的黑暗世界。这一刻，两人心中都欢喜甜蜜。吕馨看到陈启，连忙说道。