airstream
noun [ C ] uk/ˈeə.striːm/ us/ˈer.striːm/
气流，空气射流
a current of air
a strong southwesterly airstream 强劲的西南气流
Migrating birds make use of airstreams to assist them on their long journey south. 候鸟借助气流完成它们向南方的长途迁徙。
Compare: slipstream