"One thing I've learned over life is that you don't really know what pain is or joy is until you experience the other."

VOA: standard.2010.03.25

It's difficult to imagine that as an expression of genuine grief over the death of a genuinely close friend would take the form of a poem so learned, so filled with remote literary allusions and obscure opinions.

这首诗是为表达对挚友逝去的真挚悲痛,却采取了这样一种如此博学，如此充满,遥远的幻境和隐晦的观点的形式,这确实是难以想象的。

耶鲁公开课 - 弥尔顿课程节选

What he's saying here is the following: "What we have learned over fifty years is that the disease model does not move us closer to the prevention of these serious problems.

他是这么说的：,“五十多年的经验告诉我们，疾病模型,不能让我们更有力地预防,这些严重问题。

哈佛公开课 - 幸福课课程节选

We've learned a lot about the mechanics of how humans work as organisms over the last 100 years or so, how we work as sort of physical objects that have to obey the laws of physics that you know about.

在过去一百多年间,我们已经了解很多,人体作为一个,有机组织的工作机理,以及人体作为一个物理实体,遵循人所共知的那些物理定律的原理

耶鲁公开课 - 生物医学工程探索课程节选

Physicians over the years of having this instrument have learned how to be very sophisticated about looking at these pictures and diagnosing when something is wrong inside the chest, for example.

这些年来,使用这类设备的医生,已经熟练地掌握了,通过看这些X光片,来诊断,胸部疾病的方法

耶鲁公开课 - 生物医学工程探索课程节选