The scale of the challenge is immense, with the flow of refugees extremely difficult to monitor and channel, let alone limit. Fleeing war and oppression, tens of thousands of people are risking life and limb to find refuge in Europe – a phenomenon that will continue as long as chaos persists in countries of origin, such as Syria, and countries facilitating transit, such as Iraq and Libya.
挑战的规模是巨大的，难民流极难监控和引导，更不用说限制了。数以万计的人们为了逃脱战争和压迫，冒着生命危险来到欧洲寻求避难——只要难民来源国（如叙利亚）和中转国（如伊拉克和利比亚）的乱局持续，这一现象也将持续下去。