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这几天,北京南沙沟的居民谈论最多的就是每家都安上的呼叫系统,这里的居民说它是全职电子保姆。由红黄蓝网络社区开
In the past few days, the residents of Beijing’s Nansha Gulou talked most about the calling system that every family has. The residents here call it a full-time electronic nanny. By the yellow and blue network community