哇，窗口太小啦
请调整浏览器窗口大小或者请使用手机查看！
S1 E5 Talking
本集简介
From a newborn's first cry to pointing, babbling, and speaking, see how children, including the deaf, learn to communicate.
请调整浏览器窗口大小或者请使用手机查看！
From a newborn's first cry to pointing, babbling, and speaking, see how children, including the deaf, learn to communicate.
