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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.年方21岁的体育大学举重部学生金福珠（李圣经饰）是一个努力向着梦想和目标奔跑的女孩，虽然看起来非常轻率，但却有一颗柔软的玻璃心。在机缘巧合之下，她遇到同校游泳部的男同学郑俊亨（南柱赫饰），一个不太走运的游泳天才，由此展开一段充满罗曼蒂克的初恋故事。Tools/Raw Materials? ?? ??, ???? ??. ????? ???? ???? ??? ??? ???? ?? ? ?? ?????? ?? ?? ? ???? ??? ??? ?????. ??? ?? ???.The "Long Victory Wheel" of the Accident