It's like the part of the brain that's responsible for language learning is only around early in development and if you don't get your language by then it'll just run out.

就好像负责语言学习的大脑区域,只是在发展的早期比较活跃,如果你没有在这个时候获得语言,那你就没有机会了

耶鲁公开课 - 心理学导论课程节选

It's too early to tell what the impact on learning will be from open course ware but we know from messages people have sent us that educators see tremendous value in being able to use the site to build work upon others.

现在还不好说,但是通过人们发来的邮件我们知道了,教育者对于能够在别人的基础上,展开自己的工作给予很高赞扬,他们现在可以节约下时间。

麻省理工公开课 - 媒体、教育、市场课程节选