Around seven years of age going up through puberty, the ability to learn language starts to go away.

大约七岁的时候开始,一直到青春期,学习语言的能力逐渐减弱

耶鲁公开课 - 心理学导论课程节选

But then it starts getting worse and worse.

但随着年龄的增长,学习能力逐渐减弱

耶鲁公开课 - 心理学导论课程节选