Eight of them (Romania and Bulgaria are the exceptions) have already joined Europe's Schengen passportless travel zone.
ECONOMIST: ??Eastern Europe??: Wrongly labelled | The
passportless:
passport +? -less
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。