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为了对付非法在地球居住的平民百姓，成立特殊警察“AIEN HUNTER”用武力强行驱逐或干脆实行杀戮。故事紧接着驯龙记电影之后展开,博克岛上的维京人与他们世代的敌人龙族和平共处的生活着。希卡普与他的小伙伴们的冒险又开始啦!故事背景大概是说,男主角在家乡成立了一间驯龙学院,与他的伙伴一起携手教族人如何驯龙,主角会得到新的能力,也会有新的龙魔王出现。你要送礼，拿这个去送。⑤ SENTINEL resetOne problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.板栗冷笑一声，转身对外大喝道：孙铁何在？魏铁在外面高声答应：传孙铁上堂。最令人兴奋的是，汪直虽然起事，对于东海以外的地方却没有任何兴趣，只求以光荣的身份回到自己的家乡。