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In the system, the client often needs to interact with multiple subsystems, which causes the client to change with the change of subsystems. At this time, the appearance mode can be used to decouple the client from each subsystem. Appearance mode refers to providing a consistent facade for a group of interfaces in the subsystem. It provides a high-level interface that makes the subsystem easier to use. For example, the customer specialist of Telecom can let the customer specialist complete the services such as charging telephone charges and modifying packages without interacting with various subsystems by himself. The specific class structure diagram is as follows:她是特德（Alex Jennings）结婚35年来的第一个她自己度过的日子，直到他离开了她。决心度过美好的一天，茱莉亚（Julia）离开了德文郡（Devon）的家，前往伦敦与她的孩子们庆祝-但他们一次又一次地让她失望。高凡喝道：慌什么？都出去。许负立即把握到一些关键的细节，这些人都长的很壮实精干，独来独往没有家人，而且很少出门。The work to be done after the MDT meeting includes:不等张良开口介绍，也不容项伯打招呼见礼，刘邦立即起身奔了过来。　　该剧独创幽默荒诞黑色喜剧风格，由一集一个独立小故事串联成整个故事主线，并加入“死神、守灵人、判官”等偏二次元的流行元素，开拍之前便备受期待。