First of all, it's really hard to figure out where everything is, where everything goes, making sure I'm in the right place.

第一，很难判断事务的位置,事物的走向，还有确定自己处于正确的位置。

麻省理工公开课 - 计算机科学及编程导论课程节选

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。

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You'd be hard pressed to identify what the meter of that is so that's one reason, and of course what--where am I going with the next important point about what's happening in this music?

你会很难确定其中的节拍,这也是原因之一,当然这也是我将要讲解的下个关键点,关于在这类音乐中的情形

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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

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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

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