One problem with the factory method pattern is that the creation of the class depends on the factory class, that is to say, if you want to expand the program, you must modify the factory class, which violates the closure principle. Therefore, from the design point of view, there are certain problems, how to solve them? We use the abstract factory mode to create multiple factory classes, so that once new functions need to be added, we can directly add new factory classes without modifying the previous code. Because the abstract factory is not very easy to understand, let's look at the diagram first, and then it is easier to understand with the code.
在作为越国都城两年之后，山阴逐渐成为吴楚大都会，甚至有超过吴中的趋势。
要是在平日里，只需要砍伐树木扎木筏即可渡河，可是现在身后有追兵，根本没有时间。
如果可以买下梦寐以求的爱情，你愿意拿什么交换？欢迎来到世界最大的购爱中心-爱的奥特莱斯！在这里，你能购买一个人的爱，交易成功，他会无条件地爱你，有限期限一个月，购买时，我们不使用金钱，只收……
谦是一名任职于国立大医院的医生，有从医的理想目标，凡事一丝不拘！小月是一间小型公关公司的主理人，是个时代职业女姓，在上海这个竞激烈的世界里，两个人都各自为着自己的工作和理想而努力！分手后二人各不相干，也再不相见，虽然居住在同一个城市里，却有若天涯，冬去春来，就这样过了两个月。
然而时间不知不觉推移，艾尔有了自己的女友，渐渐疏远了鸟孩，在中学的毕业舞会上，英俊帅气的鸟孩受到了女孩们的青睐，但是鸟孩却一个人默默地回家了，那一晚，鸟孩脱光了衣服，把金丝雀当成了自己的爱人。
Ethnic issues are both important and sensitive. How can we write them well? I consulted the senior of the feature agency, and she said, "Writing down the story has power."
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全不知情的光头强带着女孩外出，路上遭遇警察的追捕。混乱就此开始，小女孩的命运该如何呢？ ©豆瓣
三年后韩平成了广告公司的白领丽人。她不愿放弃尊严而与老板马雄博发生了冲突。韩平
He mobilized the New York Times to rescue Hu Shi from prison, which is rarely mentioned in domestic historical works. When Hu Shi was the principal of China Public School, he was finally arrested for offending the national government by repeating three important articles in New Moon. As news came that he would be shot, Aban was furious and mobilized the Times headquarters to publish a long editorial condemning the atrocities committed by the national government. He quickly translated the editorial into Chinese and Japanese, spending a lot of money, and sent the editorial to all Chinese, Japanese and English newspapers and magazines in the Far East by telegram for reprinting, forming a trend of overwhelming condemnation, finally forcing the national government to withdraw the butcher's knife and release Hu Shi.
The two long voices were followed by a short one, indicating that "our ship is trying to overtake your starboard side";
后工业时代，各种大型私人城市监狱被建造起来，其中最臭名远扬的就是“绝命岛”监狱。有“条子杀手”称号的卡尔（鲁克·高斯 Luke Goss 饰）被押往这里，接受无期徒刑。一心要在电视领域闯出天下的女典狱长琼斯（劳伦·科汉 Lauren Cohan 饰）掌权时期。政府将监狱的运行权交给了蔚蓝公司。在蔚蓝眼中牢房在新时代的商业运作体系下一样是有利可图的。这帮囚犯对于他们来说正是绝好的真人玩命体育比赛的选手，将他们你打我杀的画面转播出去一定大受欢迎。而蔚蓝公司精心设计的比赛项目就是“死亡飞车”。卡尔成了一名赛车手，为了自由不惜与众多监狱人员搏命，为自由而奋战着，却不知自己正走上一条传奇之路。
黄豆听了又是生气又是激动，忙问道：那狗官那么坏，咋舍得让你把这些东西都带走哩？红椒横眉道：不让带？他敢。
Nature spells in WOW include earth spells (such as Shaman's Earthquake), air spells (such as Shaman's Lightning Arrow and Lightning Chain), natural life spells (such as druid and Shaman's various healing spells) and poison (thief's various poisons) which are all nature spells.
便打发小鱼儿出谷，让小鱼儿不成为天下第一恶人，就绝不能回恶人谷，就这样，小鱼儿开始自己的江湖之旅……小鱼儿出了恶人谷，进入江湖，林成洲本以为就不会那样搞笑了，但是没有想到，出谷之后。
电影《三变 山变》由彭兰玉执导，以改革开放40年为大背景，用纪录电影表现手法展示六盘水市各级党委政府以责任、担当和勇气带领全市各族人民群众是怎样开启脱贫攻坚之旅的，真实再现了“资源变资产、资金变股金、农民变股东”这“三变”改革探索中的鲜活故事，记录了在以习近平总书记为核心的党中央领导下，中国农村正在发生着的翻天覆地的变化。
…,……齐王田广在睡梦之中被吵醒了。
Think about whether we can expand and draw inferences from other examples.
