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In the system, the client often needs to interact with multiple subsystems, which causes the client to change with the change of subsystems. At this time, the appearance mode can be used to decouple the client from each subsystem. Appearance mode refers to providing a consistent facade for a group of interfaces in the subsystem. It provides a high-level interface that makes the subsystem easier to use. For example, the customer specialist of Telecom can let the customer specialist complete the services such as charging telephone charges and modifying packages without interacting with various subsystems by himself. The specific class structure diagram is as follows:小光小武终于在铁岭立足脚跟，但是小光却有了新的苦恼，他想要凭自己本事攒钱给小惠一个梦幻的婚礼。小光绞尽脑汁想挣钱的办法，紧急关头却都能遇到各种倒霉的事……张居正躬身进言，杨经历闻其贼兄犯京，只身入皇城，只求为人质，以规劝杨贼。剧情描述一个犹太拉比的儿子一心想成为百老汇明星，唱歌跳舞。此举遭到家长的强烈反对。他们只想让他成为犹太教仪式中的领唱。但是深深热爱爵士乐的儿子一心只想唱流行歌曲……　　秋季到来，芦苇荡枯黄一片。传宝等面对赖以藏身之地一筹莫展，高老忠根据冀中平原的特点提出改造地窖的建议，得到大家的一致拥护。 高家庄热火朝天地改造地窖的消息很快传到敌人耳朵里。于是，汤丙会派出暗探化妆成乞丐利用高家庄人民的善良胡钧继续道：若不是每天早晚操练，我都要忘了自己是干什么的了。还说，你姑姑一家，还有你们，离开家里这么些年，肯定想吃家乡的东西，肯定吃不惯京城的菜，就又买了许多干笋干菜腊味什么的，连鸡鸭都逮了许多，拖了十几辆马车。