common market
noun
1- a group of countries imposing few or no duties on trade with one another and a common tariff on trade with other countries共同市场（成员国之间贸易不加或几乎不加关税, 与其他国家之间的贸易征收共同关税的团体）。
1.1
the Common Market
a name for the European Economic Community or European Union, used especially in the 1960s and 1970s欧洲共同市场（欧洲经济共同体的又名, 尤用于20世纪60和70年代）。