In two years, America has gone from a sense of invulnerability to an awareness of peril;from bitter division in small matters to calm unity in great causes.

• 在两年内，美国从曾经的不可侵犯到危险就在身边，又从为了一些鸡毛蒜皮而闹分歧到为了伟大的事业而形成空前的统一。