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8. Repeat the above stages;B) It is suggested to start from a simple scene and discover or design a certain pattern by yourself. From this, you can understand how the model solves the problem. In this way, the model becomes your own thing, and you will not have the problem that it is easier said than done. All design patterns are just the application of basic principles and concepts in specific occasions. You may not know the name of a design pattern, but you know all its advantages, disadvantages, variants and applications. Seeing mountains is not mountains, seeing water is not water.根本没有熟悉魏宫，进出更加方便的许负做得好，能够安然无恙将玉娘给自己带回来，就必须要感谢。Ottoman Empire: 325,000在遥远的东方世界，有一座与世无争的世外仙境“太阳岛”，岛主之子龙威是一个典型的“网瘾+废柴”少年，却整天做着展翅高飞，拯救世界的白日梦，因为根据古老的预言，当整个世界陷入邪恶黑暗的时候，太阳岛上的太阳鸭就会出现并带领大家对抗邪恶，保护每一寸土地都能照到阳光,滋润万物生长,不受到邪恶力量的威胁。多年后的某一天,绿头鸭军团意外来到太阳岛，东方鸭与绿头鸭之间的矛盾对抗打破了太阳岛长久以来的平静生活，意外的是身为太阳岛岛主之子的龙威与绿头鸭司令的女儿艾瑞卡，却在东方鸭、太阳鸭的高压对峙下陷入到了甜蜜恋爱之中，然而就在双方剑拔弩张战况愈演愈烈之际，那个被众人遗忘的“黑暗寓言”却在邪恶女巫婥特的布局下悄然发生……黑暗降临之际，曾经的“废柴+网瘾少年”的龙威能否突破宿命，成为拯救世界的鸭界超级英雄——太阳鸭呢When the switch is pressed, the program will call the self.buttonWasPressed method. All behaviors after the switch is pressed will be encapsulated in this method. The code is as follows:木霖还在呢，你住那不方便。