migration (جمع migrations)
- There was a mass migration of poverty-stricken farmers into the cities.
- He argues that there are many economic benefits of migration.
- Christmas Island is known for its annual migration of 50 million bright red land crabs from the forest to the sea.
- Some old roads follow the paths of seasonal animal migrations.
- Scientists track bird populations and migration patterns.
- (رایانه و فناوری اطلاعات) ترایال