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小婴儿多少天能竖住头

更新时间: 2020-11-05 00:00:00     

1个月的婴儿只能稍稍抬头片刻,3个月时头才能初步直立。由于颈部和背部肌肉发育还不完善,1~3个月的婴儿不能较长时间支撑头的重量。因此,抱1~3个月的婴儿的姿势是很讲究的,关键是要托住婴儿的头部。

关键词: 婴儿 多少

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