Later,Helen learned that nature could be cruel as well as beautiful.

VOA: special.2009.11.15

It's something we learned later, but It wasn't part of our early educational experiences.

是后来学的,并不是我们早期教育的一部分。

麻省理工公开课 - 媒体、教育、市场课程节选

It wasn't until the 20th century, so almost 200 years later, that we learned how to do this.

在詹纳研制出天花疫苗二百多年后,直到二十世纪,我们才知道如何做到这一点

耶鲁公开课 - 生物医学工程探索课程节选

Hundreds,and later thousands, of black women learned her hair-care methods.

VOA: special.2010.03.28

And eight years later Nixon seemed to have learned his lesson.

而八年后尼克松似乎也学到了教训

耶鲁公开课 - 博弈论课程节选