论商品购进模型的运用
The application of the model of goods bought
这些盈余有很大一部分并没有被他们消耗掉，他们并不能使用美元进口石油或者商品，或者购进美国国家发行的主体债券。
They have not consumed a good portion of these surpluses . The $ they could not use to purchase oil or commodities or PMs have been placed principally in US public debt .
商品购进