1610s, of persons, 1640s of animals, from Latin migrationem (nominative migratio) "a removal, change of abode, migration," noun of action from past participle stem of migrare "to move from one place to another," probably originally *migwros, from PIE *meigw- (source of Greek ameibein "to change"), from root *mei- (1) "to change, go, move" (see mutable). Related: Migrational.
That European birds migrate across the seas or to Asia was understood in the Middle Ages, but subsequently forgotten. Dr. Johnson held that swallows slept all winter in the beds of rivers, while the naturalist Morton (1703) stated that they migrated to the moon. As late as 1837 the "Kendal Mercury" "detailed the circumstance of a person having observed several Swallows emerging from Grasmere Lake, in the spring of that year, in the form of 'bell-shaped bubbles,' from each of which a Swallow burst forth ...."
雙語例句
1. The scale of migration took a quantum leap in the early 1970s.
20世紀70年代初，移民的規模驟然擴大。
來自柯林斯例句
2. During the last recession, migration to the sunbelt accelerated.
在上個經濟蕭條期，人們向美國南部陽光地帶移民的速度加快了。
來自柯林斯例句
3. Birthplace data are only the crudest indicator of actual migration paths.
出生地信息只能非常粗略地顯示實際移民過程。
來自柯林斯例句
4. Swallows begin their migration south in autumn.
燕子在秋季開始向南方遷移.
來自《簡明英漢詞典》
5. The migration consisted of three waves of settlers.