"His health,course,he's been ill, but I think we will agree that he was very healthy, very energetic and very clear-thinking, and he was very engaging and his wife was very congenial,hospitable.

VOA: standard.2009.04.07

It's just clear mind, clear thinking.

就是清醒的心智，清醒的思考。

攀岩的刺激 - SpeakingMax英语口语达人

One of the reasons for thinking it's not clear whether the argument fails or not is because it's hard to pin down, where exactly did it go wrong?

并不能确定这个论证是否成立,的其中一个原因就是,我们很难确定,到底是哪里出了问题

耶鲁公开课 - 死亡课程节选

It's also interesting that Athens has a very clear tradition of thinking they had kings, and what I think is very telling is the story they give us about how kingship came to an end in Athens.

这很有趣,雅典人有个非常鲜明的传统,认为他们有过国王,他们有个我觉得很生动的故事,描述雅典的王权是如何终结的

耶鲁公开课 - 古希腊历史简介课程节选

So look,what I've just been talking about for the last half hour or so is the fact that we've got to get clear, in thinking about the nature of death, as to whether or not the crucial moment is the moment when the personality functioning stops or the moment when the bodily functioning stops.

过去的半个小时,我一直在说我们要搞清，死亡的本质，是人格功能还是生理功能的停止,定义了死亡。

耶鲁公开课 - 死亡课程节选