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邻居家的宝宝9个月大时,还没有出牙。小区里和他同一月份生的宝宝,有的在4-5个月大的时候,就开始出牙了,其余的都在6-7个
Neighboring baby 9 months old, no tooth. Community and his baby born in the same month, some 4-5 months old, began to teeth, and the rest are in 6-7