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1. Some classes are created frequently, which is a large system overhead for some large objects.Finally, I hope every photography lover can take satisfactory and exquisite photos.在现代生活，不可缺少的是衣食住，加上“车”。车是一些人的名誉，一些人的权势，也是另一些人的生计手段。人们还拿人开的车判断其人。车给有人带来幸福，也给有人带来痛苦。"That maybe, half way still want to kill? Finally, on the way back to drag, Liu Gui took a group of people to search the room one by one and found a notebook, as if it were Shan Guoxi's, with the list of people who killed the old summer on it.张老太太便说道：我娘家村子里，有个小结巴。　　最终玝爷无罪释放，海澄因此丢了官职。急于报国的奕玝爷目睹慈禧凌驾于光绪之上，发誓要助皇帝亲政。光绪命玝爷送字画给南方的康梁，虽有世铎破坏，终不辱使命。Javascript neither supports abstract classes nor has the concept of interfaces. Therefore, be very careful when using the state mode. If you forget to implement the buttonWasPressed method for a state subclass when writing a state subclass, an exception will be thrown when the state switches. Because Context always delegates requests to the buttonWasPressed method of the state object. Therefore, let the abstract method of the abstract parent class throw an exception directly, which will be found at least during the program run.