The glib answer is that America has two economies: residential construction and car production are in a slump, but the rest is still chugging along.

• 一个圆滑的解释是，美国经济目前可以分为两个部分：正处在衰退中的住房建造业和汽车制造业以及依旧马里十足的其他行业。而后者让美国人感到乐观。