migration
US /maɪˈɡreɪ.ʃən/
UK /maɪˈɡreɪ.ʃən/
1.
迁徙, 移居
seasonal movement of animals from one region to another
:
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The annual migration of wildebeest across the Serengeti is a spectacular sight.
角马每年穿越塞伦盖蒂的迁徙是一道壮观的景象。
•
Bird migration patterns are changing due to climate change.
由于气候变化，鸟类迁徙模式正在改变。
2.
移民, 迁徙
movement of people from one place to another (often across a border) with the intention of settling permanently or temporarily in a new location
:
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Economic factors often drive human migration.
经济因素常常是人类迁徙的驱动力。
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The country has seen a significant increase in rural-to-urban migration.
该国农村到城市的移民数量显著增加。