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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:——亲哪都行的告别吻。影片主要讲述了心存梦想的刘小二终于开始了自己憧憬过无数遍的大学生活，五个来自天南地北不同性格，习惯和家庭背景的女孩凑到了一起，开始了有欢笑和泪水，有梦想的大学时光。性格外向的班长吴静喜欢上了同班的坏小子肖张并展开了一系列的追求。但肖张却发现自己爱上了刘小二而拒绝了吴静的示爱，自尊心极强的吴静由此对昔日的好闺蜜，好室友刘小二万般排挤，带头孤立她。导致刘小二因为种种压力选择了退学....位于某小镇的科萨高中，一场舞会开幕在即，校园内的时尚男女精细准备，渴望一个梦幻浪漫的夜晚。几个学校内公认为怪胎的科幻俱乐部成员夜探公墓，却无意中唤醒沉睡地下的恐怖僵尸。一时间，活死人纷纷爬上地面，小镇的夜晚充满恐怖和死亡的气息。不久，僵尸的病毒蔓延至学校，舞会被杀戮所取代。At the end of the documentary, Grandpa's health became worse and worse. Grandma took care of Grandpa. She fed, bathed and dressed Grandpa until the last moment of Grandpa's life.请再来四杯第二季……头上戴着顶红艳艳的软帽，上面尖尖的，尾梢垂在耳畔，尾端坠了一粒大珍珠和一粒红宝石，衬得小脸粉团团的。