For America and Europe, the need for labor to move out of manufacturing is compounded by shifting comparative advantage: not only is the total number of manufacturing jobs limited globally, but a smaller share of those jobs will be local.
在美国和欧洲，劳动力从制造业中流出的需要产生于比较优势的变化：制造业岗位总数有限是个全球性问题，但比重下降却只限于国内。