(OMITTED) "Then they have to practice - their first vocalizations are like babbling in babies, and they have to hear themselves while they practice."

VOA: standard.2010.04.05

He's just in his own world babbling on and on.

他只是在自己的世界里不断的胡说。

耶鲁公开课 - 死亡课程节选

They start babbling at the same point.

婴儿们同时开始咿呀学语

耶鲁公开课 - 心理学导论课程节选

Around seven months is babbling.

婴儿在大约七个月大的时候开始咿呀学语

耶鲁公开课 - 心理学导论课程节选