Factory Pattern: Factory Pattern is a frequently used pattern. Classes implemented according to Factory Pattern can generate instances of one of a group of classes according to the provided data. Usually, this group of classes has a common abstract parent class and implements the same methods, but these methods perform different operations for different data. First of all, we need to define a base class. Subclasses of this class implement methods in the base class through different methods. Then you need to define a factory class that can generate different subclass instances according to conditions. After getting an instance of a subclass, developers can call methods in the base class regardless of which subclass instance is returned.
在阿富汗执行任务的美国空军飞行员科特史蒂文斯上尉（杰克·吉伦哈尔饰）突然惊醒，发现自己在一辆高速行驶的列车上，而他的身边坐着一个素不相识的女子克里斯蒂安（米歇尔·莫娜汉饰）正在与自己讲话。科尔不知自己为什么会在这辆车上，而且他发现自己居然是以另一个人的身份存在，正当他迷惑不解的时候，列车上忽然发生爆炸……科特又一次惊醒，发现自己身处一个密闭的太空仓里，有一位女军官古德温（维拉·法米加饰）正在通过视频和自己对话，并要求自己报告列车上发生的事情。一头雾水的科特还没搞明白是怎么回事时，他又一次被送上那辆列车。这次之后，科特终于明白自己在执行一件任务，负责调察芝加哥火车爆炸案找到恐怖份子并查出他的下一个目标。
本剧讲述主人公一家四个男人分别是9岁、19岁、29岁、39岁，由于家族历史有“逢九必衰”的惯例，母亲福子甚是担忧四处寻找化解灾祸的良方，由此引发了一连串的故事。且看主角们如何扭转“逢九必衰”的命运，迎来属于他们的美好人生。
刘父半生积蓄被奸商所骗，更在法庭败诉，郁郁而终，死前托女儿小云找奸人家族报仇。奸人家族一早不值奸商所为，设下以奸治奸的圈套，不料简仁与简贵为争小云欢心，被奸商利用……
1. Take a one-meter-long network cable and bend it back and forth for at least 20 rounds. Then pull it properly, and it doesn't matter if it is slightly stronger. Then install crystal heads at both ends of the network cable to see if the network cable can be used. If it cannot be used, then the network cable does not meet the standard in general, unless you pull it too hard.
总不能咱们这群铁骨铮铮的汉子逼一个女子当堂脱衣验证。
此时一阵轻风吹过，屋檐下的铃铛迎风而响，绿色的衣角轻轻飘起，仿佛也带着几分笑意。
执好行李，准备迎接最潮佳节！《艾米丽在巴黎》第 2 季，12 月 22 日首播！
Focal length, also known as MF. It refers to manual focusing. When taking photos, you need to click on the screen to determine the focus.
此时，一个神秘人出现，枪杀伊藤，救出了丁水妹。后来，老百姓说是神龙显灵，杀了鬼子头。丁水妹从此对这个“神龙”牵肠挂肚。
哥哥，那你喜欢谁哩？平常不爱说话的小娃儿，忽然好奇起来。
The price of Wang Meow's socks is not high either, and they are versatile and exquisite, which is simply too high.
Second, I always try to find a perfect investment method, not aware of the necessity of gain and loss, so I glance left and right to be swayed by considerations of gain and loss. The first kind of people become paranoid and criticize the market for posing as truth when they are not satisfied. The second kind of people become swing and can never be firm once.
一架飞机在大西洋上空神秘失踪，Archie Panjabi（#傲骨贤妻#）饰演的女主对此展开调查。
就算他长大了，也不好教。
武涉心中一动，听这个意思，齐王韩信是有意于西楚国化解这段仇恨。
古镇方桥绣庄林立，恰似姹紫嫣红的偌大花圃。而明德绣庄更是一枝独秀的奇葩，闻名遐迩，因为它拥有独门绝技缂针绣和一位技艺超群的绣娘。缂针绣绝无仅有的传人阿秀，靓丽、灵秀、身世迷离，其人其技深藏绣阁，密不示人。
此剧是一部运动爱情题材电视剧，讲述了25岁，羽毛球实业组选手们的故事。主要讲述了混合双打男女主对羽毛球的热爱和爱情故事。
So, how do we modify the actions in a certain rule? For example, I want to change the actions in the following rules from DROP to REJECT. What should I do?
三千年后，少年李靖在昆仑山修行功法，年少气盛的他遵从使命下山降妖除魔，不想刚一下山，就遇到作乱人间的狰狞二兽，李靖紧随其后到达了北方孤城“大荒城”。
