migration
英 [ma?'gre??(?)n]
美[ma?'ɡre??n]
- n. 遷移；移民；移動
英英釋意
- 1. the movement of persons from one country or locality to another
- 2. a group of people migrating together (especially in some given time period)
- 3. (chemistry) the nonrandom movement of an atom or radical from one place to another within a molecule
- 4. the periodic passage of groups of animals (especially birds or fishes) from one region to another for feeding or breeding