In order to join the euro a country must be a member of the European Unionbe able to pass economic tests set out by the Maastricht Treaty.是什么意思_In order to join the euro a country must be a member of the European Unionbe able to pass economic tests set out by the Maastricht Treaty.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句