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　　她们只好组队抗敌, Celia 找来好友 Iris 为伍,Meimei 则与 _Monna 为伍, 四女分成两党, 在同—屋筐下互相斗法, 施展女生整垒技俩, 退敌不成, 却搞出笑料。 　但这户人家看上去比之前那户人家要好，门窗都关得严严实实的。刚好他们回到旧寺后山，他灵机一动，指着暮色下正在菜地里锄草的几个和尚道：住持难道没发现，他们才更像和尚。不着急。Although there are subclasses in java that implement the interfaces of the parent class, But I think javascript can be different from java, It is possible that the parent class in java is an empty class, Subclasses to implement the interface of the parent class, in javascript, I think the common code is completely written in the parent function. If the business logic needs to be changed in the future, or new business logic is added, we can completely use subclasses to rewrite the parent class, so the code has strong scalability and is easier to maintain. Since I am not a professional java, please understand if there is any mistake in describing the knowledge points in java ~ ~