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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:4. (1) When ships can safely use the corresponding traffic separation in the adjacent traffic separation system area, the coastal navigation zone shall not be used. However, ships with a length of less than 20m, sailing boats and ships engaged in fishing can use coastal navigation zones.Action: Stupid Force改编自LazySheep的小说《红线》。在SP中，吉高饰演的主人公·伦子在三年后还是单身，不过她依旧没有放弃，前作中和坂口健太郎饰演的金发帅哥KEY是否还有后续呢？ 荣仓奈奈饰演的香成为了人妻，大岛优子饰演的小雪则朝着自己的梦想继续前进，本剧描绘的就是这样的各种问题。尹旭和左明都惊疑不定，漫天的尘土在秦军阵后扬起。