With the latest national polls showing Obama leading McCain by an average of about 7 points, Senator McCain is trying to shift the focus of the campaign debate away from the economy.

• 在最新的全国民调显示奥巴马领先麦凯恩平均约7个百分点的情况下，参议员麦凯恩正努力将竞选辩论的焦点从经济问题转移。