migration patterns

• 移民模式

migration patterns的用法和样例：

例句

1. And he pointed out that cracking down on illegals has had a perverse effect, ending a pattern of seasonal or circular migration that has served Texas well for many decades.
   他又指出，镇压非法移民会有带来负面影响，终结一直维持德州良好运转长达数十年的季节性或循环性的移民模式。