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Only in the last ten kilometers, I felt slightly pushing my feet, took off my shoes to move my socks, and the feeling of trying again did not decrease. This kind of situation has also occurred in cross-country drivers before. There are no more than two reasons. One is that the shoes are not suitable or the shoelaces are slightly loose. The other is that the socks do not fit. The third is that the feet slide forward when going downhill. Of course, either of the above situations occurs when the slope is downhill. I asked my friends, and two of them had the same situation as me. Judging from experience, it should not be the cause of shoes and socks, it is purely caused by downhill, and it may be that one's shoelaces are not fixed to one's feet.1972.12-熊猫家族　　一连串的悬念叠生，曲折复杂的案件接踵而至。黄浦江浮尸案、人体器官失踪案、药厂毒药案等几宗大案背后都与日本“黑龙会”有着神秘瓜葛……不将就。/panic (panic)Synflood attack is the most common DDoS attack on the current network, It is also the most classic denial of service attack. It takes advantage of a defect in the implementation of TCP protocol. By sending a large number of attack messages with forged source addresses to the ports where the network service is located, it may cause the half-open connection queue in the target server to be full, thus preventing other legitimate users from accessing.那个夏天，孩子们的绝密任务开始了