customs union

customs-union的词性：
n.（名词）

1. An international association organized to eliminate customs restrictions on goods exchanged between member nations and to establish a uniform tariff policy toward nonmember nations.
关税同盟：一个国际性组织，是为了消除成员国之间交换货物的关税限制以及对非成员国家建立一个统一的关税政策而组织起来的