migrate

vi. 移动, 移往, 随季节而移居
【计】 迁移程序
【医】 移行

名词:migrator 动词过去式:migrated 过去分词:migrated 现在分词:migrating 第三人称单数:migrates 

mi.grate

v.intr.（不及物动词）
mi.grat.ed,mi.grat.ing,mi.grates
To move from one country or region and settle in another.
移居，迁徙：从一个国家或地区迁移到另一个国家或地区定居
To change location periodically, especially by moving seasonally from one region to another.
迁移，移栖：定期变换所在地，尤指季节性地从一地迁移到另一地

来源：
Latin migr3re migr3t- * see mei-
拉丁语 migr3re migr3t- *参见 mei-

【引伸】
mi.gra.tor
n.（名词）
Migrate, which is used of people and animals, sometimes implies a lack of permanent settlement,especially as a result of seasonal or periodic movement.Emigrate and immigrate are used only of people and imply a permanent move,generally across a political boundary.Emigrate describes the move relative to the point of departure:
Migrate 用于人和动物， 有时含有缺乏永久的居住地之意，尤指出于季节性或定期迁移这两个原因。Emigrate 和 immigrate 仅用来指人， 意味着永久性的迁移，一般指越过政治意义上的疆界。Emigrate 的含义与离开有关：
例句：
After the Nazis came to power in Germany, many scientists emigrated (that is, left Germany).
纳粹夺取了德国的政权之后，许多科学家都迁走了（也就是说，离开了德国）。

By contrast,immigrate describes the move relative to the destination:
与之相对，immigrate 指的是与到达目的有关的移动：
例句：
The promise of prosperity in the United States encouraged many people to immigrate (that is, move to the United States).
兴旺发达的前景吸引了众多的移民到美国（也就是指，迁入了美国）