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The policy mode is the packaging of the algorithm, which separates the responsibility of using the algorithm from the algorithm itself and delegates it to different objects. Policy patterns usually wrap a series of algorithms into a series of policy classes. To encapsulate the policy pattern in one sentence is to "encapsulate each algorithm into a different policy class so that they can be interchanged". The following is the structure diagram of the policy mode:这是刘黑皮在指挥众人安排车马，除众人随身携带的，其他行李都先行装车，结扎停当。暴走漫画倾力打造午夜场,《暴走恐怖故事》惊悚来袭！全新暴走式恐怖让你笑出一身冷汗！In fact, not necessarily. The poor who have been caught in a vicious circle for a long time will soon become poor even if they become rich occasionally. The National Bureau of Economic Research of the United States has conducted a survey: in the past 20 years, the bankruptcy rate of European and American lottery winners has reached 75% within 5 years.According to the "Special Provisions on Labor Protection for Female Workers", if a female worker cannot adapt to the original labor during pregnancy, the employing unit shall, according to the certificate of the medical institution, reduce the amount of labor or arrange other labor that can adapt to it.在亚马逊丛林腹地，探险科学家图里奥和琳达发现几近灭绝的野生蓝色斯皮克斯金刚鹦鹉。夫妻俩通过电视向全世界宣布这一惊人消息，看到这一幕的珠儿劝说丈夫布鲁，打算带着三个调皮可爱并且已经习惯了人类文明世界生活的鹦鹉小宝宝，回到它们生长千百年的故乡寻找同类。鹦鹉一家说走就走，和它们的好朋友踏上充满惊险和乐趣的空中旅程。与此同时，某非法砍伐团体看到新闻，为防止图里奥夫妻阻挠他们的罪行，他们也悄悄采取行动。另一方面，与布鲁积怨已久的葵花凤头鹦鹉奈杰发现布鲁的踪迹，也愤然采取行动。