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The 23 design modes, in fact, the predecessors have summed up the ways to solve the problem. Their aim is to ensure the low coupling and high cohesion of the system. The principles guiding them are nothing more than the design principles of packaging change, single responsibility, interface-oriented programming, etc. After that, I will continue to share my WCF learning process. Although there are many WCF series in the blog park, I felt that it was not necessary to write them before, and I felt that I could use them. However, I did not write them. I always felt that the knowledge was not my own and I did not feel in-depth. Therefore, I still want to write such a series. I hope all bloggers will support me more.18岁的平凡女生杉菜转入了精英学校英德大学却与同学们格格不入。学校里有四个外形阳光帅气，家境富裕的学生：道明寺，花泽类，西门和美作。因为杉菜看不惯道明寺飞扬跋扈的模样，仗义的杉菜与他产生了争执，从此之后，道明寺常常恶作剧作弄杉菜。之后一系列的事情发生，使杉菜与道明寺之间的误会逐渐的加深。但每到危急时刻，花泽类都会出现帮助杉菜并帮其解围。杉菜凭借其杂草般顽强的生命力逐渐改变了这四个男生对其不好的印象，与他们的关系也逐渐缓和，变成了朋友，从平凡女生变成了全校同学的榜样。道明寺也因为在恶作剧杉菜的过程中，被她不屈不挠的乐观天性所吸引，不知不觉的爱上了杉菜。两个人经历了重重阻碍，最终走在了一起，收获了爱情。河边上汉军将士的呼喊声此起彼伏，现在唯有这样的选择才有活命的机会。　　すき焼きの試食に恐怖をおぼえたり、"Because I have heard some scout comrades who came down from the enemy's rear say before, The Vietnamese army has the habit of dogs biting people. They just take advantage of the dog's low stature, The advantage of fast moving speed, Avoid fire, Then they rushed to the position with explosives and died with us. There is also the gunner who rushed up with the dog and bit us. Good jamming the gunner's shot, Buy time for their attack, I heard that they learned this tactic from Mao Zi. I don't know exactly what is going on. Anyway, that kind of "dog" is fantastic, with a large number and fast speed. It is difficult to hit all kinds of light and heavy firepower on hand. The closer they get to the position, the more they will take some simple evasive actions, which cannot be prevented.塔里克试图恢复正常的大学生活；布雷登为塔里克提供了一个逃跑的机会；莫奈为企业制定计划以保护她的孩子；凯恩找到了一个新的家庭，为自己走上街头。听过云青山的禀报，尹旭立即从其中抓住这样几个关键点。