定期移栖 meaning in Chinese
migrant
migrate
migration
Examples
- He spends the winter in the west indies and summer in england, commuting back and forth like the migrating swallows .
他在西印度群岛过冬天，在英国过夏天象定期移栖的燕子一般固定来回。 - I don ' t get it . how do migrating swallows know their way to africa
我不明白，定期移栖的燕子是怎么辨认它们去非洲的路的？