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As far as a class is concerned, there should be only one reason for it to change. If a class assumes too many responsibilities, it is tantamount to coupling these responsibilities together. Changes in one responsibility may affect other responsibilities. In addition, coupling multiple responsibilities together will also affect reusability.…,奈何河水湍急，根本无法渡河，数万大军在身后而毫无用处。Experimental process:　　原来当年无花与李红袖之父天枫十四郎来中原习武，被人拒之门外，痛苦之下，混于各门之间，偷学武功，而后又与各大门派决斗，最终死于丐帮任慈和少林方丈天峰之手，任慈和天峰不知天枫十四郎在跟他交手前已跟别人交手，十分后悔。According to the memory of Zhang Xiaobo, a soldier who personally participated in the battle that year:9. The single-person and single-pot meal distribution system is both hygienic and unique. The small pot can boil in 2-3 minutes. Compared with other brands, it is faster and saves time, greatly exerts energy efficiency, and realizes low cost and high cost suppression.