#International Trade国际贸易 搜索结果
Todayeverycountrybuysfromandsellstoothercountries.Ifonecountryhasmorebananasthanitneeds,butnotrucks,itmayexchangethebananaswithanothercountrythathasmoretrucksthanitcanuse,butnobananas.现在，每个国家都与其
