eu-

英文解釋：

名詞 eu-:

1. a bivalent and trivalent metallic element of the rare earth group
   同義詞：europium, Eu, atomic number 63
2. an international organization of European countries formed after World War II to reduce trade barriers and increase cooperation among its members
   同義詞：European Union, EU, European Community, EC, European Economic Community, EEC, Common Market, Europe