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她们手上各自提着一个大包袱，脚步匆匆，边走边回头张望，似乎有些慌张。Therefore, when designing AI-based defense, you need to consider the following facts:公元2049年，夏天。-+ + +-+ 1? //1原本不抱希望在市政府福利科工作的新人牧野聪美（桥本爱饰），发现了信赖的前辈社工山川被烧死的尸体，以此为契机，被卷入围绕城市福祉、市政、医疗的黑暗中。Multidisciplinary Comprehensive Treatment Professional Committee of Surgeons Branch of Chinese Medical AssociationAlthough the above code can meet the requirements, it is not easy to expand and difficult to read. If I want one or two conditions in the future, if I want to recharge 300 yuan successfully, I can win the 150 yuan red envelope, then I have to change the code inside at this time, so the coupling between business logic and code is relatively high, and I accidentally correct the wrong code. At this time, we try to use the responsibility chain mode to transfer objects in turn to realize it.