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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.你先坐会儿，陪娘说会话，等下咱们一块给他们送吃的去。赵培土踏前一步，望着永平帝道：臣以为，四灵是助皇帝镇守四方、守护天下臣民的。《佛本是道》竟然真得做到了整合古代神话故事，重塑传统神魔小说的架构层次和力量体系。公主？章邯和董翳都有些惊诧，公主这个词汇已经原来他们很久了，一时间有些反应不过来，更不知道眼前这位公主是何许人也？中年妇人淡淡道：也难怪，本公主在泾水之畔居住多年，哪里还有人记得，何况如今大秦已经不在。Entrepreneur Ling Jun told the story of two employees of his company. The two employees are classmates he recruited at the same time."Yes, This is 20 minutes, It is also for this reason, Alas, these 20 minutes, I felt longer than two years, Without artillery support, There have been many "halts" in the positions. So I also saw clearly what that strange smell was. How can I describe it-it looks like the strange thing like a dog before, Four feet, Round and thick body, running very fast, but the difference is its back, above is not hairless kind of skin, but one by one full of small peach size purple "blood bubble", a strange thing can carry at least more than ten, it runs, these "blood bubble" before and after the left and right trembling, that makes people see scalp pins and needles.