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　电影以来自山东的叔侄俩叶振云和叶川，结伴来到改革开放初期的“花花世界”广州，在火车上相遇了同乡女大学生刘芳为开头。在三人一次次的不期而遇中，上演了一段在理想和情感之间徘徊的青春修炼曲。然而就在此时，香港商人李想的出现，又将这段错综复杂的感情推向另一个高潮。《瑞克和莫蒂》主创打造的新动画《外星也难民》获续订第3季。Freeform宣布续订《#成长不容易# grown-ish》第三季。司马二匆匆结束掉《沧海龙帝》，这是几个意思？二爷，输人不输阵，就算跪着蚂蚁，也要把《沧海龙帝》写完啊……司马二，你该不会认怂了？网友们纷纷发言，其中不乏司马二的铁杆粉丝。比如昔年的韩国商人吕不韦，在邯郸遇到秦国公子异人，认为奇货可居，动用手中财富将异人推上秦王之位，自己也成为秦国丞相，一时风光无限。可是没想到一转眼就出现了这样的局面，齐国倒向了他们这边，还向他们求援。Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.