A treaty on European economic and monetary union, agreed by the heads of government of the twelve member states of the European Community at a summit meeting in Maastricht in December 1991. Ratification was completed in October 1993.
英语词典包含464360条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。