Вы искали: 也是导致希腊陷入危机的主... (Китайский (упрощенный) - Английский)

(a) 贫穷、缺乏机会、收入差距和区域间的生活状况是导致移徙的主要原因之一；
(a) poverty and a lack of opportunities, as well as income gaps and discrepancies in living conditions among regions, as some of the fundamental causes of migration;