为何美国人的储蓄和投资决定带来了总贸易赤字？ 原因很简单：如果一国将总产出的更多部分储蓄起来而不是投资于企业设备和结构，它就有剩余产出卖给世界其他国家。
The reason why Americans’ saving and investment decisions drive the overall trade deficit is straightforward: If a country saves more of total output than it invests in business equipment and structures, it has extra output to sell to the rest of the world.