The fundamental reason for using design patterns is to adapt to changes, improve code reuse rate, and make software more maintainable and scalable. In addition, the following principles should be followed when designing: single responsibility principle, open and closed principle, Richter substitution principle, dependency inversion principle, interface isolation principle, composite reuse principle and Dimit principle. Each design principle is described below.
我们天南地北，不着边际地一直聊着。
兰儿对秦淼摇手道：不中用，咱们家也来了好些客人。
Characteristics and Application of LDPE Hot Melt Adhesive Powder
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Listening to the elderly, Ms. Ping learned that the use of herbal medicine as a dyeing agent dates back to when people first accurately discovered that boiled plants would paint cotton or stain yarn; Realizing this, they begin using these solutions to alter the aspect of their closures, and they experienced this with variable plants, flowers, and roots.
在坐牢12年后，前高中橄榄球明星埃迪·帕尔默回到了家乡，开始全新的生活。他和来自一个麻烦家庭的弃儿山姆建立了一种意想不到的联系，但埃迪的过去威胁到他的新生活和家庭。
郑氏边走边瞥一眼板栗，止不住忧心不平：这才多少日子，可怜她一双儿女都这样……到了板栗房里，郑氏将他摁坐下，试探地叫了声：板栗？板栗惊醒过来，抬头望着娘，诧异地问道：娘，啥事？哦，娘刚才说对账，对啥账？郑氏跟张槐对视一眼，讪讪地笑道：也没啥要对的，就是你从北边带回来的东西，你爹要核对个数。
原价要两千两银子，现价一千八百两……香荽急忙转头去看，是什么东西这么贵。
又名三片无藤之叶，讲的是三姐妹各自的爱情故事。三姐妹成长在一个富裕的家庭，父亲是一个公司的高层，母亲是家庭主妇。三姐妹的三段感情，父亲都是不赞同的。但是最后是女儿们坚持自己的选择，父亲无奈也只有接受并祝福。
……曹邦辅咽了口吐沫。
韩国网络电视剧讲述的10代是很简单的，因为我们是第一次度过10代。说没有烦恼的年龄所有的瞬间都是真心的10代共感浪漫网络电视剧
小铃对悟志恨之入骨，她甚至不惜纵火想要除掉悟志，然而，计划失败了，小铃将一切责任和过错推到了悟志的身上，使悟志面临着牢狱之灾。无家可归的小铃被送往了舅舅家借住，没想到心胸狭窄的舅妈视其为眼中钉肉中刺，表姐更是对小铃恶颜相向。如同汹涌王洋之中漂泊的一叶孤舟，小铃不知道自己的未来究竟在何处。
《苍茫英雄》就是江成海投稿侠客文化的小说。
/mourn (mourning)
如今河朔草原已经被匈奴人占领，东线的燕赵一带也已经进犯到长城一带。
天权地处西境，物丰财厚，率先称王，依仗昱照山天险，少与他国往来；天枢于北境，盛产良驹、精铁，枢人擅机巧、筑建之术，自立之后吞并了与之接壤的小属国开阳；西南的天璇，马强人壮，新王登位之后，积极开缰拓土；东南之天玑，奉巫仪、重农耕，虽然还没称王，但已吞并了另一小属国玉衡。
Jia Hongwei, male, 24 years old, from Henan, lives in Shenzhen
In the previous example of electric lights, a state mode program was completed. First, the Light class is defined, which is also called Context here. Then in Light's constructor, to create instance objects for each state class, Context will hold references to these state objects in order to delegate the request to the state objects. The user's request, that is, the action of clicking button, is also implemented in Context, with the following code:
他急忙隐住身子。
