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? After the 2008 financial crisis, the United States is facing great pressure from economic recession and rising unemployment, and urgently needs to change its development momentum. At the same time, the deindustrialization and emphasis on service industry in the past 20 years have led to a decline in the international competitiveness of the U.S. Economy, and it is urgent to upgrade the industrial system. Under this background, the then Obama administration put forward a re-industrialization strategy to optimize the domestic investment environment and attract the return of domestic manufacturing industry and foreign direct investment. In the current round of re-industrialization in the United States, the industrial Internet advocated by GE and other large multinational enterprises has become a typical representative.　　吊儿郎当的将门子弟马八一(夏雨饰)为了一个心爱的姑娘的召唤，出人意外地毅然走进他最头疼的军营，仿佛早已注定：像他这样的人居然会进入部队，而他的人生从踏进部队大门的一刻彻底改变——在熔炉烈火中不甘心成为炉渣，经过十几年的锻烧他终于从一块废铁被百炼成钢！Now, let's imagine why these "checkpoints" are called "chains" in iptables. As we know, The purpose of a firewall is to match "rules" for passing messages, Then execute the corresponding Action, So, when the message passes through these checkpoints, You must match the rules on this level, However, there may be more than one rule on this level, But there are many rules, When we put these rules in a chain, A "chain" has been formed. Therefore, we imagine each "checkpoint" as shown in the following figure. In this way, it is more appropriate to call them "chain". Each message passing through this "checkpoint" must match all the rules on this "chain". If there are qualified rules, the corresponding actions of the rules will be executed.这是一部带有传奇色彩的西部片。三毛偷了县令上贡给知府的夜明珠，被教头十步追杀。大头和二蛋出手相助，却无端惹来大祸。寡妇水儿救了他们，因拒绝说出其藏身之处，为十步所害。于是，三个男人集体踏上复仇之路。陈启到来的时候，赵英杰和秦思雨正在拍摄一场打斗戏。