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Hive Input and Output Library Hive-IO-ExperimentalEach variable defines a valid range of values《笑闹无底洞》是一部爱情喜剧无厘头电影，讲述了唐僧在无底洞遇到白鼠精后，发生的一系列爱情纠葛的故事。Tang Lin, producer of CCTV's financial channel "Charming China City", revealed the innovative highlights of the second season. First, the timing of the second season of the program is better than that of the first season. The 19th National Congress and the National Two Sessions have been held one after the other. At the same time, the 40th anniversary of reform and opening-up is a great moment. From the perspective of the country, we can see the pace of our city and the pace of China. Second, humanistic care is more intense. We only do two rounds of competition, so that the city can focus on the program and carry out intensive cultivation, so that the charm of the city can be better released. Third, we should use real elements to express our love for the city. We will follow the process of filming all the city competitions and rehearsals, and aspire to set up a biography for each city. Competition is only a means, reality is the end.Abstract factory mode refers to providing an interface to create a series of related or interdependent objects, so that clients can create product objects in multiple product families without specifying the specific type of products, emphasizing the change of "series objects". The main points of its implementation include:八十年代中期，曾经威风凛凛的跳伞教练张越新早已没了当年的豪情壮志，在一所聋哑学校里当一名普通的体育老师，天天为一家人生活上的琐事犯愁，当过舞蹈演员的妻子林白对他颇多埋怨。就算面对生活的窘境，老张依然天天积攒着成捆的破麻袋片，希望能乘着自己亲手做的滑翔伞，再一次实现翱翔蓝天的梦想。老张的固执和痴迷招致妻子和周围人的不理解，只有邻居若兰姑娘默默地支持着他……