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/belch　　然而，她一生的悲剧也就在这幸福的童年中埋下了深深的祸根。在经历了两次婚姻的失败与母后武则天、皇嫂韦氏、中宗皇帝显及侄子李隆基等几十年的恩怨及权力争斗后，“接受”李隆基赐予的一尺白绫悬梁自尽，孤独地死在大明宫深处。东北长白山区刘老根带着“岁数不大，还想干点事”的简单意愿从省城回到家乡，利用天然的旅游资源办起了农民度假村。 在创业的过程中，刘老根不断遭遇来自生活、观念、情感和内心的冲击，使这位在生活面前从容不迫的过来人，不得不一次次地重新审视自己…… 如何推动事来，如何对待情感，如何把握内心平衡，似乎是刘老根永远做不完的课题……讲述发生于2002年到2004年间伦敦警视厅警探科林·萨顿追查到一名连环杀手！调查真实连环杀人案的故事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.Note: When running shell commands here, if you want to call variables before python, you can do the following: