宝宝发展的每一步,嘴巴作为触觉的重要部分之一,都起到了非常大的作用。随着宝宝一天天的长大,嘴给他带来许多信息和多种表达方式。宝贝在妈妈的子宫里一个半月大的时候,虽然胚胎小得只有妈妈的手指甲盖那么大,但是头部已经分离出来。头部有一个小小的洞,就是将来嘴巴的位置。从胚胎期到3岁,你会发现,他小 Every step of the baby’s development, the mouth as an important part of the touch, have played a very big role. As the baby grows day by day, Mouth brings him a lot of information and a variety of expressions. Baby in the mother’s womb a half months old, although the embryo is so small that only mother’s fingernail cover so big, but the head has been separated. The head has a small hole, is the location of the future mouth. From the embryonic period to 3 years old, you will find that he is small