Noun:

1. migration from a place (especially migration from your native country in order to settle in another)

expatriationn.放逐国外；放弃国籍

migrationn.移民；移往；移动

exilen.放逐；流放；被放逐者vt.放逐；流放

relocationn.再定位；重新配置；重新安置

exodusn.大批的离去Exodus：（《圣经·旧约》中的）出埃及记.

flightn.飞行；航班；镖尾；逃走，逃离，溃逃

evacuationn.撤离；疏散n.排泄；排泄物

out-migrationn.移居外国

1. Increase in population made emigration necessary.
   人口的增加使向外移民成为必要。
2. Emigration had carried to its shores shoals of men and women.
   移民使成群结队的男男女女来到了它的海岸。