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The seven-layer model of OSI and its description are as follows:/fearIf 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.田大贵的妻子钟碧玉（苏玉华 饰）对近日里变得古里古怪的田大富起了疑心，千方百计想令他露出马脚，而范统则想要回归天庭，因此尝试了各种各样的方法，闹出了不少的笑话和麻烦。随着时间的推移，范统和田大贵一家人之间结下了深厚的情谊，某次意外中，田大贵不幸丧生，为了救田大贵，范统不惜再度犯下了天条。The adapter pattern of the class想着这事多亏了泥鳅，忙又对他道：泥鳅，今儿真亏了你机灵。