Well, Wright finds this an extremely difficult request to respond to.

理查做不到。

耶鲁公开课 - 1945年后的美国小说课程节选

It was extremely difficult.

非常难。

未来的医生 - SpeakingMax英语口语达人

And this is no surprise if what we are is the workings of our physical brains, but it is extremely difficult to explain if one is a dualist.

如果我们的本质就是生理大脑的活动,那这也就没什么可惊奇的,但对于二元论者来说,解释这些却是非常困难的

耶鲁公开课 - 心理学导论课程节选

Now, as I said last time, the subject of free will--or free will, determinism, causation and responsibility, this cluster of problems-- is an extremely difficult and complicated physical problem.

正如我上次所说的,自由意志这个主题 或者说自由意志,决定论,因果论,责任,这一堆问题,是极端困难和复杂的物理问题

耶鲁公开课 - 死亡课程节选

We all know that the situation there is extremely difficult.

大家都知道阿富汗的局势很紧张。

普林斯顿公开课 - 国际座谈会课程节选