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童大人顿时眼前一黑。Bridging mode aims to decouple abstraction and implementation so that the two can change independently. That is to say, the bridging mode further abstracts the implementation details of the original base class into an implemented structure, and then transforms the original base class into an abstract hierarchical structure, thus realizing independent changes of the system in multiple dimensions. The structure diagram of the bridging mode is shown below.2有一天突然被召唤到人间。仙山隔云海，霞岭玉带连，据说世外有天仙……古代神话中有八位神仙：铁拐李、汉钟离、张果老、蓝采和、吕洞宾、韩湘子、何仙姑和曹国舅，人们并称为八仙。《八仙过海》根据民间传说改编而成的电视剧。据传原来的八仙也是凡人，他们是经过仙人的点化而成仙的，八位仙人就有八个成仙的故事，虽然他们的经历不同，但却有一个共同点：他们斩妖驱邪，锄恶扬善，造福人类，在世间留下了许多美丽的传说……Unfortunately, there is not only one kind of electric light in this world. Many hotels have another kind of electric lamp, which has only one switch, but its performance is: the first time it is pressed to turn on the weak light, the second time it is pressed to turn on the strong light, and the third time it is turned off. Now the above code must be modified to complete the manufacture of this new type of electric lamp:人类在各个领域的进步过程，塑造出成就非凡的工业化时代，而且多半为大家所乐见。然而，我们在课堂上学到的这两百年历史却充满了偏颇思维，现在应该去思考进步背后的历史，并了解我们所认为的进步过程。