The majority of foreign workers in Western Europe today are present there legally, but according to rough estimates, about 10 per cent of the foreign labour force is working without proper work permits.
今天在西欧的大多数外国工人都是合法停留，但是根据粗泛的估计，约有10％的外国工人是在没有适当工作许可证的情况下工作。