Clinton said the two countries, which had frosty relations during the Cold War era and beyond, still differ on some key issues but that their new partnership has the potential to be a "signature accomplishment" of the two governments.

VOA: standard.2009.07.20

Again, each of them seems to represent, in a superior way, the key components of the human soul, the appetitive, the war-like or spirited, and the rational.

每一位角色，似乎都代表着，较优秀的人类灵魂的关键构成要素，欲望，战士精神，以及理性。

耶鲁公开课 - 政治哲学导论课程节选

And that's our obligation to send them to war only when we have to, and only when we know they can actually achieve their mission is a key difference between what I advocate and what the neo-cons advocate.

我们有义务,在必须的时候，送他们上战场，我们必须确保,他们一旦奔赴战场就能完成使命,这是重大的不同,我和新型保守派主张的不同之处主要在此。

普林斯顿公开课 - 国际座谈会课程节选

The key is we fight the same war now,". Still,even with the increased U.S.commitment, the expected increase in NATO forces and the new emphasis on developing Afghan forces, General McChrystal told his troops there is a long, difficult fight ahead.

VOA: standard.2009.12.03