migrant          
 noun [ C ] uk/ˈmaɪ.ɡrənt/ us/ˈmaɪ.ɡrənt/
 移民
a person that travels to a different country or place, often in order to find work
  The cities are full of migrants looking for work. 城市里到处是寻找工作的移民。 
  biology 迁徙动物
an animal that moves from one place to another at different times of the year
  These birds are winter migrants from Scandinavia. 这些鸟是从斯堪的纳维亚迁徙过来的越冬候鸟。 
 migrant          
adjective [ before noun ] uk/ˈmaɪ.ɡrənt/ us/ˈmaɪ.ɡrənt/
 迁移的
travelling to a different country or place, often in order to find work
 migrant workers 流动工人 
 a seasonal migrant population 季节性流动人口 
  biology (在每一年不同时间)迁徙的
moving from one place to another at different times of year
  migrant birds 侯鸟