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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.怀有滑冰梦想的冬冬和爸爸生活在一起，他需要一个新冰鞋和伙伴们去参加冰雪节的冰雪娃娃大赛，经济情况不好的爸爸没有给他买新冰鞋，父子发生争执，冬冬为此赌气出走，在外过程中他遇到了两个小偷，他的勇敢善良最终感化了他们，他们和冬冬还有他的伙伴们一起打败了一个破坏冰雪节活动的国际大盗，而冬冬的这次曲折冒险经历，也让他感受到了爸爸的不易而改变了对爸爸的态度，他重新拥抱了亲情，而冬冬和他的伙伴们也得到了一种成长。来自月球的外来生物自带异能,他们经历漫长的进化及繁衍,不断适应地球环境,悄然融入人类社会,被称之为：月族。表演系学生佟小曼仅剩3个月寿命,却误打误撞与欧泽野缠绵一夜。欧泽野的到来打破了佟小曼平静的生活。在啼笑皆非的同居生活中,佟小曼对欧泽野心生好感,却发现他并非人类,而是月族。月族平时与常人无异,可每到月圆之夜便要经受诅咒变为恐怖的嗜血狂魔。欧泽野险些伤害佟小曼,引发了巨大的感情矛盾。但最终,佟小曼与欧泽野仍然坚信真爱至上。二人不顾一切,冲破世俗禁锢,扫平障碍,终究逆天改命,化作了世间一对平凡爱侣。年三十的早饭吃的有些早，所以徐风在下午三点的时候准备了‘午饭。海报上的诗写道：鸿图霸业谈笑间，不胜人生一场醉。在2017年7月8日，当地9点—9点半在东京电视台开始播出After implementation, summarize, you can write a blog or record your own cloud notes, etc.