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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.你不是想探口风吗？那我满足你。　　对该装置进行破解。境外间谍组织头目彼得森获悉“水母”丢失后，紧急责令潜伏海昌多年的海洋俱乐部总经理王维韬，不惜一切代价夺回“水母”芯片。As for plant dyeing, its unique charm lies in its natural color and luster, as well as its quiet, soft and quiet temperament. Wearing it can even protect the skin.娘是说，夫妇当互敬互爱，长辈应该慈和、关爱体谅晚辈，才能赢得晚辈敬重。可是，通篇倒像大白话、大俗话，更不要谈文法了。