Another non - nefarious cause of increasing income disparity may be our ever - higher immigration rates 造成收入差距加大的另一个不可指责的原因或许是攀升的移民率。
2.
The visas will be apportioned among six geographic regions . a greater number of visas will go to those regions that have lower immigration rates 签证以六个地理区域分配，移民率较低的地区将获得较多签证名额。
