America has ample reserves to defend its global role and, Mr Krepinevich argues, potential rivals also have weaknesses.
美国拥有巨额储备来维护其全球的角色，而且，Krepinevich先生认为，潜在的敌人也有软肋。
2
Krepinevich described a world that is rapidly changing, driven by a number of demographic and technological trends.
Krepinevich形容这个世界因为受人口数量和技术趋势驱动，变化得太快。
3
That is an increasingly combustible trend, Krepinevich noted, because "greater and greater destructive power" is ending up "in the hands" of such individuals and groups.