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Tree.root. Add (nodeB);　 一件事情阻止了他们的计划。一个两岁的孩子，被称作“狡猾的斯莱”，从她秘密的实验室里跑走了。他的出逃对他们的研究和计划有很不利的影响。在斯莱躲避是投笔从戎，还是求取功名。宁城首富陆永年，虽已富甲一方，却仍有遗憾。因大太太沈容不能生育，陆永年遂把希望放在二太太韦一娴身上。韦一娴果不负期望，替陆家生下一名女婴，取名陆明珠。沈容虽已收养一子浩中，但毕竟不是陆家的骨血，思及未来，心生恐惧。Visitor pattern decouples the data structure from the operations acting on the structure, making the operation set relatively free to evolve. Visitor pattern is suitable for systems with relatively stable data structure and easy change of algorithm. Because visitor mode makes it easy to increase algorithm operation. If system data structure objects are easy to change and new data objects are often added, visitor mode is not suitable. The advantage of visitor mode is that it is easy to add operations, because adding operations means adding new visitors. Visitor mode centralizes the relevant behaviors into one visitor object, and its changes do not affect the system data structure. Its disadvantage is that it is difficult to add new data structures. -From Encyclopedia打算徒步走遍全国的男孩高飞旅途中迷了路，误入一个在地图上根本找不到的城市——“篮球部落”，篮球热潮在这个城市弥漫，所有人都在打球、赛球、看球、谈球。高飞无意中显露出过人的弹跳和反应，被认为是最有希望的新星而遭到各大球队争抢，高飞狼狈逃窜，被篮球酒吧的厨师叶雯救下。篮球部落第一高手风雪新为了追求女孩罗敏敏，冒天下之大不韪离开效力多年的东方不败球队，而投奔由罗敏敏组织的新空气队，在篮球部落引起轩然大波。风雪新来酒吧退还从未谋面的叶雯写给他的情书和礼物，让叶雯很受伤。本打算离开此地继续旅行的高飞顾及叶雯的情绪，暂时留了下来……