"We also looked at the part of the brain called the hippocampus which is very important for forming the sort of memories we make everyday,you know, when you have to remember a pin number or you have to remember how to get somewhere, and the hippocampus, if it's a good size that means you are less likely to develop Alzheimer's,"

VOA: standard.2009.12.30

That's a quite difficult argument to pin down does it work or does it not work.

这个论证很难确定,是不是说得通。

耶鲁公开课 - 死亡课程节选

Because there, it's not known for dive bars with cheap beers and pin darts and, you know, people getting in a bar fight.

因为那里不是因有便宜的啤酒和针头飞镖的廉价酒吧和酒吧打架闹事而闻名。

如果想去俱乐部 - 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 more difficult to pin down where it goes wrong.

这个论证更难分析出,哪里有错。

耶鲁公开课 - 死亡课程节选

Because once you actually push people,to pin them down, what do you mean by it,you end up with something that's either just not true, or not interesting,or not necessary, or not particularly unique to death.

因为你一旦逼问他们这到底是什么含义，得到的东西既不会是真实的，也不会是必要和有趣的，也不会是对于死亡来说独特的。

耶鲁公开课 - 死亡课程节选

The interesting thing about Descartes' argument is that it's easy to see something has gone wrong in the case of the Morning Star and the Evening Star, but it's difficult to pin down what exactly went wrong.

笛卡尔论证的奇妙之处在于,我们能明显感觉到,晨星和昏星的例子中,有些东西不对劲,但很难确定,错误到底在出哪里

耶鲁公开课 - 死亡课程节选

So it's not that the result is going to be that I'm going to try to convince you that death isn't bad, but it takes actually a little bit of work to pin down precisely what is it about death that's bad and how can it be death?

所以，这么说,并不是我试图让你相信死亡不是坏事，但是这的确要花点时间来准确地说清楚,什么让死亡成了坏事，和怎样才算死亡？

耶鲁公开课 - 死亡课程节选