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Explain that in the OrderPizza method, we do a lot of things, including calling the CreatePizza method to generate a desired pizza, and then doing a series of operations on the pizza. The key point is that Pizza is defined as an abstract class, which means that in the OrderPizza method we don't care what type this Pizza is at runtime, in other words, this is decoupling. The coupling between PizzaStore and Pizza is uncoupled.说完，一扯呆愣愣的黎水，向外走去。3. The term "sailboat" means any sailing ship fitted with propellers and not used by the user.好在，赵文华也的确是天下难觅的揩油能手。　　光棍吴老大一直追求宝乐婶，也希望儿子吴海洋能娶金花，留在城里。哪知海洋在城工作的公司倒闭，决定返乡创业，令吴老大难以接受。劝其不听，气得将“没出息”的儿清朝末年，在以慈禧为首的后党和以光绪为首的帝党之间斗争日渐激烈之际，“京师大侠”大刀王五开设镖局，奔走江湖，摆设擂台，招聚爱国侠客义士，以图共同举事，反清灭洋，振兴中华。王五某天巧遇幼年朋友谭嗣同，遂想请他共谋大事，但谭嗣同此时已扶助光绪帝推行变法。不料袁世凯告密，后党连夜发动政变，将光绪帝软禁，光绪令维新人士迅速逃离，谭嗣同却决心以死效忠皇上，不肯逃走。6. Precautions for importing su from cad