"A number of our European partners are making difficult decisions.

VOA: special.2010.07.02

and a number of things that are just, sort of, difficult for human beings to process and make intelligent decisions.

还有一系列，人们难以去控制,并且做出正确决定的事情。

耶鲁公开课 - 金融市场课程节选

National issues presented President Pierce with more difficult decisions.

VOA: special.2009.04.23