改进题:International trade occurs when a country does not have enou

改进题:International trade occurs when a country does not have enough of a particular item to meet its needs.

译文:国际贸易发生在一个国家没有足够的物品来满足其需求的时候。
【正确答案】:改进的译文:当一个国家没有足够的某一特定商品来满足自身需求时,就需要有国家贸易。
【题目解析】:p64