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Recently, I have made a preliminary investigation on DDOS attacks, and have some superficial understanding of the causes of DDOS attacks and their detection and defense mechanisms. This paper focuses on some thoughts on DDOS attacks in metropolitan area network environment under traditional network architecture.During this period, due to changes in nerve sensation and metabolism, some people may produce some "strange" sensations. For example, ketone bodies produced by fat decomposition may make people feel a mild sense of excitement. Even if you don't eat continuously, you won't feel hungry or thirsty. Therefore, you won't feel pain because you don't eat.张家，挨过了黑夜，如同那清晨的曙光，如同初升的红日，慢慢腾空而起。要说第一次的时候，徐风大过年的说晦气话，而且季木霖本身也多少带着点被要挟的负面情绪，俩人闹不和完全是在情理之中。　　不能再演奏钢琴的程岳，离开台湾到世界各地去流浪，后来落脚大陆上海，并和董小鹿意外重逢、两人从互相讨厌到彼此了解， 还发生…但这仅限于欧洲，在落后的东印度，本方舰队完全可以在将港口轰烂的情况下直接登陆。Beijing