| 例句 |
It is instinct that tells the birds when to begin their migration.是本能让鸟类知道何时开始迁徙。A migration into the valley continued in full spate beyond the middle of the century.移居到该峡谷的浪潮一直保持到本世纪中叶以后。He's giving a lecture on bird migration.他在作关于鸟类迁徙的讲座。They were terrorized into migration.他们因受威胁而迁移。The outward migration of people from the city has hurt the city's economy greatly.城市人口外流使该市经济受到很大损害。The bird may cover thousands of miles during its migration.这种鸟迁徙时可以飞翔数千英里。There has been a migration of people from the country to the towns.人们从乡下移居城镇。During the last recession, migration to the sunbelt accelerated.在上个经济萧条期，人们向美国南部阳光地带移民的速度加快了。Dr Baker has made detailed studies of the migration patterns of many birds.贝克博士详细研究了许多鸟类的迁徙模式。Enslaved Africans endured the largest forced migration in history.被奴役的非洲人被强制迁移，迁移规模史上最大。The decline of the rural economy has caused urban migration.农村经济的衰退已经导致许多人向城市迁移。New roads and communities restrict the migration of the elk.新道路和社区的建立限制了麋鹿的迁徙。Birthplace data are only the crudest indicator of actual migration paths.出生地信息只能非常粗略地显示实际移民路径。 |