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Since June 1999, an investment of 170 million yuan has taken more than two years to build the West Lake Park, which consists of three famous bridges, three water areas and four islands. The West Lake covers an area of 100 hectares, including 82.28 hectares of water, 1.72 hectares of square roads, 16 hectares of greening and more than 200 kinds of tree species.刘井儿道：本来就忘了。2. Relevant applications are very matureQuality is the foundation and design is indispensable. In order to better meet the needs of young fashion people, Osaka Weaving House has set up fashion trend research institutes in Shanghai, New York and Tokyo in the second year of its establishment, which are operated by a team of professional designers to bring forth the old and bring forth the new.Men's and women's singles and doubles respectively.Although the above code can meet the requirements, it is not easy to expand and difficult to read. If I want one or two conditions in the future, if I want to recharge 300 yuan successfully, I can win the 150 yuan red envelope, then I have to change the code inside at this time, so the coupling between business logic and code is relatively high, and I accidentally correct the wrong code. At this time, we try to use the responsibility chain mode to transfer objects in turn to realize it.