flyway

1. Nigeria is one of several African countries located on the Black Sea-Mediterranean flyway used by migratory birds.
   尼日利亚是几个地处候鸟使用的黑海&地中海飞行路线的非洲国家之一。
2. Yet the physical changes that go with affluence destroy the habitats of migratory shorebirds and seabirds, wreaking havoc on their numbers along the crucial East Asian-Australasian flyway.
   然而经济发展带来的环境恶化破坏了migratoryshorebirdsandseabirds的生存环境，在东亚-澳洲的主要迁徙路线上，这些鸟类数量锐减。这句话没有并列关系。
3. Stopover sites along the flyway are vital for shorebirds to refuel and finish their migration to the breeding ground.
   中途停歇地对于鸻鹬类补充能量以顺利完成迁徙并在繁殖地成功繁殖至关重要。

noun

1. the geographic route along which birds customarily migrate

   Synonym:    migration route