The third, and most pressing, crisis is the result of massive flows of migrants from the Middle East and elsewhere into Europe. The flood of people is exposing new rifts among EU members, raising questions about the principle of open borders and free movement that has long been at the core of the EU.
第三次也是最急迫的一次危机是大量难民从中东和其他地区潮水般涌入欧洲。难民潮凸显出欧盟国家新的裂痕，引发了对欧盟核心边界开放和人员自由流动原则的质疑声。