回购贸易和互购贸易之间的重要区别之一在于回购贸易一般比互购贸易要延续更长一段时间。
【正确答案】：ONE OF THE IMPORTANT DIFFERENCES IS THAT A BUYBACK DEAL USUALLY STRETCHES OVER A LONGER PERIOD OF TIME THAN A COUNTER PURCHASE DEAL.
【题目解析】：该题目素材选自L9。此处句子结构比较简单，只需充分了解两个术语的表达，“回购贸易”a buyback deal 及“互购贸易”a counter purchase deal即可。
