the president of Chrysler. "This has been the most difficult business decision I've ever personally had to take.

VOA: standard.2009.06.04

It's difficult to imagine that as an expression of genuine grief over the death of a genuinely close friend would take the form of a poem so learned, so filled with remote literary allusions and obscure opinions.

这首诗是为表达对挚友逝去的真挚悲痛,却采取了这样一种如此博学，如此充满,遥远的幻境和隐晦的观点的形式,这确实是难以想象的。

耶鲁公开课 - 弥尔顿课程节选

Now this isn't the first time in this course that I've paused over a moment at a crossroads where you can't possibly take both paths but where it is obviously very, very difficult to make up one's mind.

现在是这个课程中第一次,在一个分叉路口停下,我们不可能同时走两条路,但是这也显然是非常难以决定的一个地方。

耶鲁公开课 - 文学理论导论课程节选

That makes it very difficult for anyone to take a decent photograph.

VOA: standard.2010.02.17

"It becomes very difficult for normal military operations to take place.

VOA: standard.2009.06.18

"You might take this as a general principle, that if you have revolutionary transformations, it's extremely difficult to go back to legal,legitimized, constitutional transfers of power that revolutionary settlements, in fact,are quite dangerous as a precedent.

VOA: standard.2009.09.01

"At least one of the bombers detonated in the deepest part of the underground which made it hugely difficult both to undertake rescue operations and to carry out the forensic examination of the site which needed to take place."

VOA: standard.2010.04.01