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Mediator pattern defines a mediation object to encapsulate the interaction between a series of objects. Intermediaries do not need to explicitly refer to each other between objects, thus reducing coupling and independently changing their interaction behavior. The specific structure diagram is as follows:The CAD Move shortcut key is "m".云影看着这群狼狈的娃儿，惊得合不拢嘴。Retroarch is the core of all emulators. No matter which emulator is running, it needs to be called and must be installed first.Bridging mode aims to decouple abstraction and implementation so that the two can change independently. That is to say, the bridging mode further abstracts the implementation details of the original base class into an implemented structure, and then transforms the original base class into an abstract hierarchical structure, thus realizing independent changes of the system in multiple dimensions. The structure diagram of the bridging mode is shown below.该剧以武昌战役为故事背景，讲述了以石一为首的革命党人在猛虎营内巧设妙局，抓寻内奸“杜鹃花”的故事。子不语怪力乱神  任何奇案背后都隐藏着一套“拼图” 破案如解谜　　自闭症患者 阿斯特丽德 vs 热血女警探 拉斐尔 因缘际会组成一对神探搭档 屡破奇案~　　一桩桩案件背后同样是一张张人性的面孔　　二人的关系就宛如命定之钥和锁孔  很期待第二季二人之间的感情发展~