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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 ~ ~在这个过程中，特七非常不平衡，因为他过手的钱财，够全寨子人吃喝玩乐几百年的了，因此毫无疑问地，狼兵走的时候，每个人都比来的时候重了十几斤。It is true that by classifying and recycling different waste packages, waste plastic packages can be prevented from being mixed into domestic waste and the waste treatment cost can be reduced. In many streets and communities, there are also classified garbage bins with the words "recycled" and "non-recyclable" written on them, but it is also very common to throw them away without looking at the classification at all. Li Li said: "The State Council has issued an action plan to promote the recycling of domestic waste. All localities are also working out corresponding implementation plans for domestic waste classification. Beijing has proposed that 90% of the residential areas should be piloted for classified recycling by 2020. I think the vision of building a beautiful China can still be realized as long as the enthusiasm of the public is really called up. "本来还念着他出去吃点苦头，踏实活着，现在看来他这辈子是踏实不下来了。Aban was born in Portland, Oregon, USA in 1884 and died in 1955. He was unmarried and childless. Aban did not like to live in conformity with the rules. In 1905, when he was just in his third year at Stanford University, he dropped out of school to join the society and got a job as an intern reporter. Before coming to China, he had been immersed in the US press for 21 years, and the highest position was editor-in-chief. During this period, Aban did not consider getting a wife and having children. He just changed jobs frequently and wrote in the mountains. In short, he hated any fixed day. After all this trouble until I was in my early 40s, I suddenly had a whim to enter the world in the Far East and came to China.讲述了女主（preaw饰演）原本只是一名平凡的办公室女孩,女主的姐姐因为一位风流老板（vee饰演）跳河自杀。男主是风流老板第二个老婆的弟弟（bank饰演）,悲痛欲绝的女主为了报复,她变身性感妖艳的女秘书慢慢接近风流老板时遇到了男主,她用尽各种心机和风流老板的几个老婆撕逼只为了让他失去一切,但是她最后也陷于爱恨交织的僵局中不能自拔~周旋于三个男人之间的女主,最终命中的真命天子又会是谁呢？@yakutv.cc