migrant： n. 候鸟; 移居者adj. 移居的; 流浪的
英语解释：a person who moves from one place to another, especially in order to find work。一个人从一个地方搬到另一个地方，特别是为了工作之类
举例:They claimed they were political refugees and not economic migrants.
immigrant:n.移民, 侨民adj.移民的
英语解释：a person who has come to live permanently in a country that is not their own
指移居永久的某地（该地不是他们自己的国家）
举例:illegal immigrants ◆ immigrant communities / families / workers
不懂可追问，望采纳，谢谢
immigrants指移入，migrants指移出
前者站在国内说国外移民进来的，后者泛指移民行为。
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