In the historical substitution principle, the methods of the subclass to the parent class should not be overridden or overloaded as far as possible. Because the parent class represents a well-defined structure, subclasses should not destroy it casually by interacting with the outside world through this standardized interface.
The above is only a model of "Long En" bicycle, If you need to generate other types of bicycles, Other subclasses can be written. The most important advantage of factory mode is that some of the same methods can be implemented. We can write code in the parent class for these same methods. If we need to implement specific business logic, we can rewrite the parent class's methods in the subclass to implement our own business logic. In terms of professional terms, there are two points: First, weaken the coupling between objects and prevent code duplication. Instantiating a class in a method eliminates repetitive code. Second: Repetitive code can be written in the parent class. Subclasses inherit all member attributes and methods of the parent class. Subclasses only focus on implementing their own business logic.
电视剧《空降利刃》以张启、潘野、齐小天等空降特种兵为代表，讲述了在改革强军的背景下，空降兵某特战旅组建起一支特殊的蓝军“锅盖头”特战队，立足实战，主动研究强敌，砥砺特战利刃，最终实现战斗力跃升、出色完成各项任务的故事。通过记录和展现新时代空军改革强军的伟大实践折射出中国强军梦，从“锅盖头”的成长历程反映出当代军人的精神面貌，传递爱国情怀。
李太太说过？哦，你说我的室友。
在德国最著名的夏里特医院 (Charité), 一代又一代医学家和医护人员不但亲眼见证了医学的发展，更是亲身经历了二战的开始与结束，以及其间施行的优生政策。
于是陈启说道：大众一般都会先入为主，就算你现在邀请很多知名人士为《白发魔女传》正名，但是那些没有看过《白发魔女传》的人已经对小说产生抵触，很可能还是不会相信。
杀猪匠杨锅三，到县城为村里的小白寡妇卖驴，无意间被裹挟进了汉奸的游行队伍，自此发生了一系列误打误撞的事，使他成为大家眼里的汉奸。为洗刷汉奸的污名，也为了给死去的乡亲报仇，杨锅三决心炸掉鬼子的炮楼。
在20世纪70年代的辰英国，三个蓝领好友整天过着相互逗乐，喝酒，打架，泡妞的生活。弗雷迪（克里斯蒂安•库克）想离开工人阶级队伍，告别这样的生活方式。但是充满魅力的布鲁斯（汤姆•休斯）和可爱的失败者斯诺克（杰克•多兰）却很享受这样的幸福生活。而当弗雷迪获得了一份上门推销保险的推销员工作后，却在一天意外遇到了他旧时的老相好朱丽（菲丽希缇•琼斯），而同时，这个三人小团体也被迫抉择，是否要永远的改变他们当前的生活方式。
陈仓小道这才走上历史舞台，为人所熟知，现在已然成为沟通两地的重要通道。
The term "network management IT" briefly means information technology (INFORMATION TECHNOLOGY). It covers a wide range. For example, industries that process or apply information technology, such as banks, consulting, hospitals, publishing, manufacturing, film and television, etc., their common characteristics are all dependent on information and information systems. Computer software and hardware, the Internet and other network environments that connect all of the above, of course, as well as personnel engaged in design, maintenance, support and management, form an ubiquitous IT industry.
Front Support
(2) Market segmentation: In the "era of concentration", product spokesmen should also be detailed and spokesmen should be subdivided. Including the breakdown of gender, age, personality, nationality, etc. Different regions have different concepts, consumption patterns, consumption concepts, economic and cultural backgrounds and aesthetic methods. Stars have different influence in different regions.
他在考虑到了女儿的姻缘和终生大事，所以多留了一个心眼，与之接触也就更多了。
承载着6000余名游客和工作人员的超级邮轮是一个行走的地球村和微缩的小社会，游客的世间百态、悲欢离合，年轻人的奋斗与爱情都在同舟共济的航程中精彩呈现。华人航海官丁凯和菜鸟领队天爱，在这个多元文化的梦想之船上相识相知，在与旅客、同事、亲人如王子洋、陈安妮、菲儿、船长和船博士等的交集碰撞中，历经波折，见证了彼此的成长、收获了美好的爱情。而由他们见证的，还有各色人等之间的爱与梦想、泪水与欢笑，海阔天空的传奇，不仅是邮轮生活，也是每一个行进中的人生。
5? Some parameters of the attack
辜战与止戈两人再度陷入兄弟阋墙的局面，就在两人打得难分难舍之际，辜战的战力指数破万点，正式和止戈并列到KO.2。
25岁的丽芙还没有找到自我，她和父母住在各省，大部分时间都花在家里的果园上。所以，当她意外地爱上了混乱和冒险的安德里亚时，她的生活被颠覆了。
性格乖僻、沉默寡言的出租车司机小户川，卷入女子高中生失踪事件。
