释义 |
migration /mʌɪˈɡreɪʃ(ə)n /noun1Seasonal movement of animals from one region to another: this butterfly’s annual migration across North America...- This may be an important mechanism promoting the shoreward migration of larval invertebrates and fish.
- In proposing the waiver, the agency suggested that it would actually benefit wildlife: By interrupting migration, drilling would enable scientists to study the effects of habitat disruption on the deer.
- But each year the number decreased until there was only one, which left in late February, 1995, to begin its long spring migration to Russia's steppes.
Synonyms relocation, resettling, population movement, transhumance, moving, moving abroad, emigration, expatriation, posting, exodus, departure, hegira, defection, trek, diaspora; German Völkerwanderung departure, passage; flight, run 1.1Movement of people to a new area or country in order to find work or better living conditions: the extensive rural-to-urban migration has created a severe housing shortage...- The set of questions, mostly aimed at the intelligentsia, seek to form an opinion on migration of Sikhs from Kashmir.
- By 1850, the heaviest concentration was in Louisiana, the result of Sicilian migration to New Orleans and its environs.
- It was the biggest migration of people seen in Europe since the Dark Ages.
2Movement from one part of something to another: there is virtually no cell migration in plants...- Generally, foreland basins show convex-up subsidence curves due to increasing subsidence rates through time resulting from migration of a supra-crustal orogenic load towards the foreland.
- Note that migration always changes the state of the entire segment, because a gamete either does or does not migrate.
- In ductile materials, these stress concentrations may be relieved by creep and stress relaxation in the matrix or by grain-boundary migration.
Derivativesmigrational /mʌɪˈɡreɪʃ(ə)n(ə)l/ adjective ...- And if it weren't for genetically implanted migrational instincts I doubt any moose kids would go up there.
- This feature may well have created a broad migrational highway for East Gondwanan marine and freshwater species to spread westward.
- The different migrational waves that swept the Caribbean region over centuries have influenced the culture and the culinary habits of the region.
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