Americas ,America,Caribbean 区别

Americas ,America,Caribbean 区别 Caribbean America is a mobile society .Friendships between Americas ca It first appeared in the Americas.中America为什么加s? 请问Americas和the U.S.的区别 the Americas American和America的区别? americas 什么意思? LAS AMERICAS怎么样 North America和Northern America有什么区别?一定要准确 America 关于America与American的区别