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#木村拓哉#领衔主演的日剧SP《教场》确定制作续集《教场2》(暂定名)，将于2021年新春播出！By writing poems, he forced himself to come up with a large number of other different words, which he usually did not think of.开往深圳的列车上，平凡的湖南女孩谭妙妙遇见了渴望过上好日子的余宛棠，两人成为了好朋友，开始了深圳的逐梦之旅。妙妙刚到深圳，就因为在酒店帮忙被误认为是船王的千金，邂逅了黄丽凤的儿子永固建设的总经理朱新宇……Visitor pattern decouples the data structure from the operations acting on the structure, making the operation set relatively free to evolve. Visitor pattern is suitable for systems with relatively stable data structure and easy change of algorithm. Because visitor mode makes it easy to increase algorithm operation. If system data structure objects are easy to change and new data objects are often added, visitor mode is not suitable. The advantage of visitor mode is that it is easy to add operations, because adding operations means adding new visitors. Visitor mode centralizes the relevant behaviors into one visitor object, and its changes do not affect the system data structure. Its disadvantage is that it is difficult to add new data structures. -From Encyclopedia嘉靖面无表情道：无须看到，听到即可。Aviation units mainly carry out tactical training, combined with combat missions, focusing on combat technology and tactical application training to improve their ability to carry out missions under complex conditions. Every year, tactical, technical, theoretical and physical assessment is organized, and flight grade assessment is carried out, and pilots of Grade I, II and III are respectively assigned. The purpose of aviation unit training is to enable each pilot to master the combat technology of advanced aircraft and be able to undertake combat missions.