The important difference between counter purchase and buyback is that in buyback the goods and services taken back are tied to the original goods exported whereas that is not the case in counter purchase.
【正确答案】：互购和回购的重要区别在于，在回购贸易中购回的货物和劳务与原出口的商品有直接联系而在互购中两者却没有联系。
