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　　贤民的父亲是船长，在一次出海中因意外事故去世，之后贤民发誓要成为造船业的第一。他和世娜是青梅竹马的恋人，毕业后一同进东振集团工作，东振集团的继承人泰成爱上了世娜，在爱情和欲望之中，世娜选择了后者……也有认得的，也有不认得。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 ~ ~Triathlon这便是指屠龙刀中的兵法，只要善用兵法，可号令天下，莫敢不从。纵火、凶杀、绑架、制毒、抢劫……为打击犯罪分子的嚣张气焰，公安部特成立十几个特别案件侦破组，分赴大江南北、长城内外，专攻大案、要案和重案。让蒲俊驻守江陵是这样，接英布来越国也是为此，这次还是如此。