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赵耘失笑道：还没影的事，你连嫂子都叫上了？你自己怎么不参加？李敬武哪顾得上答他，若不是大哥，他倒可以试一试。The next four patterns, including this pattern, are all the relationships between classes and do not involve inheritance. When learning, you should remember induction and the diagram at the beginning of this article. The observer mode is well understood, similar to email subscription and RSS subscription. When we browse some blogs or wikis, we often see RSS icons. This means that when you subscribe to the article, you will be notified in time if there are subsequent updates. In fact, in a nutshell, when an object changes, other objects that depend on the object will be notified and will change with it! Objects are a one-to-many relationship. Let's look at the diagram first:Play Bone Wu Daxiu　　苦娘有两个儿子，两个儿子都刻苦好学。在哥哥考上大学后不久，高中的弟弟也相继考上了大学。如果说此人能够帮助越国得到夜郎国和巴蜀之地，那结果会多么的令人激动人心。