”像萨默斯这样的人之所以为赤字忧心，是因为他们怀疑政府借来的钱是否最终被用到了可以推动GDP长期增长超过债务增长的手段上。
People like Summers worry about deficits because they doubt that the money the government is borrowing is being spent in ways that will push the long-term growth of GDP above that of the debt.