At times he expresses his frustration with the difficulty of his task, and resentment that it's been assigned to him.

有时，他会表达自己对这项被指派的，任务的挫败和不满。

耶鲁公开课 - 旧约导论课程节选

If you haven't looked at the homework problems, you might have difficulty with the homework quiz.

但如果你没有看过作业的问题，这个测试则将会很难。

麻省理工公开课 - 固态化学导论课程节选

That's at least the kind of claim that fans of the body view often make in the face of this difficulty for the personality theory.

这是在人格理论面临困难时,肉体理论支持者提出的说法。

耶鲁公开课 - 死亡课程节选

Hobbes may, I think, overestimate or maybe I really should say underestimate the difficulty of the book but he returns to this again at the very end of Leviathan.

我认为霍布斯高估了自己,或者准确地说是他低估了现实的困境,所以他在《利维坦》结尾部分,再次回到了这个问题上。

耶鲁公开课 - 政治哲学导论课程节选

And the difficulty with that approach, even if we break the question, whether not there're souls, the difficulty at the approach was that it seems as though the soul could constantly be changing while the personality who might call stays the same.

这种前提的难点在于，即使我们将问题分解，先不管灵魂是否存在，难点还在于,似乎灵魂可以,不断地改变，而人格,这个重要的方面，却保持不变。

耶鲁公开课 - 死亡课程节选