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眼角的泪花犹在，眸子里有着太多的悲伤与仇恨。大夫被他勒得直翻眼，猛力咳嗽起来。一旦我们在北方打起来，他就有可能趁火打劫，北上袭击江淮。吃过晚饭，吕馨又兴致勃勃的开始写小说了。Avoid coupling the sender and receiver of the request, make it possible for multiple objects to receive the request, connect these objects into a chain, and pass the request along this chain until an object processes it. This is the responsibility chain mode. In the responsibility chain mode, it is possible for each object to process the request, thus realizing decoupling between the sender and receiver of the request. At the same time, the responsibility chain mode simplifies the structure of the object, which makes each object only need to refer to its successor without knowing the whole chain, thus improving the flexibility of the system and making it more convenient to add new request processing classes. However, we cannot guarantee that all requests can be processed in the responsibility chain, and it is not conducive to observing runtime characteristics.在下久仰戚将军，绝非虚言。