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The template method pattern consists of two parts, The first part is the abstract parent class, The second part is the subclass of concrete implementation. Generally, the abstract parent class encapsulates the algorithm framework of the subclass, including implementing some common methods and encapsulating the execution sequence of all methods in the subclass. The subclass can inherit the parent class and rewrite the methods of the parent class in the subclass, thus realizing its own business logic.Advanced Mathematics (Tongji 7th Edition): Yes, what I said is the reference book for postgraduate entrance examination. It is really good, with moderate difficulty, and with the corresponding video or video of some basic courses abroad, the high number understands the limit, derivative, differential and integral are almost the same.这是2004年《Long Way Round》和2007年《Long Way Down》的后续，这次麦克格雷格跟朋友Charley Boorman骑着哈雷·戴维森电动摩托，穿越中南美洲的13000英里，从美丽的乌斯怀亚启程，经过13个国家。要么打，要么收，无中策可言。　　南清市缉毒大队队长叶其辉收到卧底警员万蕾线报，本市最大毒贩团伙——“幽灵”组织准备倾销存货，潜逃海外，而与其交易的对象则是K国大毒枭巴青。