And the prospect of having a lot of time to pursue math problems of a richer and deeper sort seems fairly attractive.

要是能有时间,解决更困难更深奥的数学问题,对我相当有引吸力。

耶鲁公开课 - 死亡课程节选

And the fact of being asked to do ten positive features is people find this hard.

实际上大家都会发现,要列举出某人的十个优点,是相当困难的。

耶鲁公开课 - 心理学导论课程节选

It' s very, very difficult to chase after a wave.

追随潮流是件相当困难的事。

普林斯顿公开课 - 领导能力简介课程节选