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Publish-subscribe mode is also called observer mode. It defines a one-to-many relationship between objects, allowing multiple observer objects to monitor a topic object at the same time. When an object changes, all objects that depend on it will be notified."I remember we had a very clear division of tactics at that time, First, adjust all the automatic rifles in hand to semi-automatic shooting mode, Of the 15 men, apart from the gunners and the bazookas, Most of the others use '81 bars', There are also a small number of 63 types, I'm using the 63, One of the characteristics of this gun and the 81-bar is that the single shot accuracy is especially good, Even better than '56 and a half', Much better than 56 Chong and some Mao Zi guns captured from the Vietnamese, At that time, in order to give full play to this advantage in precision, The company commander ordered us to use this tactic, The concrete implementation is to use heavy machine guns to suppress fire in hidden places, In addition to killing as many enemies as possible, If the enemy takes tactical actions such as lying down to avoid shooting, Then use machine gun fire to limit its movement range, That is to say, they are suppressed in situ, and then rifles are used to give full play to the advantage of high semi-automatic shooting accuracy, giving them "roll call" one shot at a time. This tactic is still very effective in dealing with the first and second large-scale attacks, with extremely high efficiency, and almost all the Vietnamese troops who came up were killed on the way to attack.BarryAllen在11岁的时候，他的母亲死于一次离奇的恐怖事故，而他父亲更被错误指认为凶手，而他父亲的挚友，警探JoeWest领养了他。现在BarryAllen已成为一个聪明﹑上进﹑讨喜的CSI鉴证分析员，与此同时他为了调查母亲死亡的真相，于是追踪起各种都市传说，也同时见识了先进的科技。近期BarryAllen迷上了由有远见的科学家HarrisonWells及其S.T.A.R.实验室团队开发的粒子加速器，其功能指对能量及医学界都会有飞跃的进步；然而在公开亮相当日（BarryAllen这角色先前曾在《绿箭侠Arrow》里出场，于《绿箭侠》事情快完结时回去了中心城，亦为公开亮相当日），粒子加速器爆炸并引起了一股风暴，不少人因使丧命，而BarryAllen则被雷击。而从长达9个月的昏迷苏醒后，BarryAllen发现自己因祸得福，得到超高速的力量，令他决定使用此力量。我们的重点是吸引情侣的乔治（拉菲·斯帕尔）和艾米（埃莉诺·汤姆林森）。 《伦敦晚报》记者和业余科学家刚抵达沃金，希望他们的新环境能帮助他们找到和平。乔治决定与表弟露西为受过教育的艾米离开无爱的婚姻，这使他被礼貌的社会所规避，与家人疏远了。甚至他的前亲兄弟弗雷德里克（Rupert Graves），政府官员，现在也没有时间同胞。他嘶嘶地说：“这是一种自私，残酷的追求，不能不带来最不愉快的后果。”Bridging mode is to separate things from their concrete implementation so that they can change independently. The purpose of bridging is: Decoupling abstraction and implementation, So that the two can be changed independently, Like our commonly used JDBC bridge DriverManager, when JDBC connects databases, it switches between databases without moving too much code or even at all. The reason is that JDBC provides a unified interface, each database provides its own implementation, and a program called database driver is used to bridge. Let's look at the diagram:等明儿她醒了，我跟她说你们来看过她了。　　本作品是以陈缘风为爸爸一角，记录女儿蓝蓝成长的点滴经历。温暖有爱的爸爸，在日常生活中经常会被女儿折腾的痛苦不已，但是爸爸经常会以一颗温暖的心去对待孩子制造的所有麻烦。而且爸爸还会经常带着女儿做出许多看似傻乎乎但其实充满人生哲理的蠢事，以此显示出真实而伟大的父爱。