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Publish-subscribe mode is also called observer mode. It defines a one-to-many relationship between objects, allowing multiple observer objects to monitor a topic object at the same time. When an object changes, all objects that depend on it will be notified.Alchemilla vulgaris威尔和格蕾丝《Will & Grace》是美国首部由有线电视播出的引入同志题材的情景喜剧。这部剧于1998年9月21日在NBC首播以来，已经获得了16次艾美奖，83次艾美奖提名，并且4位主演均获得了艾美奖。 
Will Truman（艾瑞克·麦柯马克 Eric McCormack 饰）从哥伦比亚大学和纽约大学的法律专业毕业后，在一个一流的法律公司工作，目标是当上公司的合伙人。但后来辞职，决定开展自己的事业。Will最好的朋友Grace Adler（黛博拉·梅辛 Debra Messing 饰）拥有自己的室内装饰公司。两人在大学里认识的。经过短暂的交往后，Will意识到自己真正的性取向，两人和平分手，促成了一段美好的a gay- straight friendship。他们之间不用言语的沟通就可以明白对方心里所想，互相支持，互相理解，拥有最牢固的友情。Karen Walker(梅根·莫拉莉 Megan Mullally饰)是Grace的助理，但其实什么活都不干，是个腰缠万贯的社交名流。Jack McFarland (西恩·海耶斯 Sean Hayes饰)也是Will的好朋友，三流演员。A2. 1.11 Limb examination.The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.当下，板栗便和郑氏商议，要抱了苞谷去王家赔礼道歉。渐渐的，养成了每一次商议事情，最后都以她的主意为准。