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很幸运，他们成功了，两百多将士都是近卫军的精锐，战斗力非同小可。秦旷听她如此说，就不好意思再呆着了，只得起身去睡，一边走一边腹诽，也没见林队长说些什么惊心动魄的故事，都是些鸡毛蒜皮、东扯西拉的事，怎么香儿妹妹就听不厌呢？等秦旷他们去后，香儿便打发白果三个孩子也去睡了，鲁三自动退去屋外守候，姐俩才开始低声说悄悄话。2047年的巴黎，大部分人群都已经习惯将时间浪费在网络游戏上，将虚幻的网络与现实紧密联系起来，甚至已经将网络世界作为他们的主要生活，把现实抛到一边。这些以网络生活为主的人群被称为“连接人”。而由于人们几乎将所有时间都耗费在虚幻的网络中，忽视了个人生活的健康与饮食，大多数的“连接人”要么丰腴腻脂，要么骨瘦嶙峋，人类整体的寿命也缩减到四十来岁。这座昔日第一强国的都城再次受到打击，项羽临走时的一把大火，更是几乎将咸、阳变成焦土。If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.Prunus armeniaca apricot[Machine Learning] Multi-classification Learning