birds of passage是什么意思 birds of passage怎么读
birds of passage的英文翻译是什么意思，词典释义与在线翻译
名词 bird of passage:- someone who leads a wandering unsettled life
- any bird that migrates seasonally
birds of passage的用法和样例
- Many migratory birds visit this lake annually.
许多候鸟每年到这个湖上作短期逗留。 - It has been really rare to see migrant birds here.
现在在这里看到候鸟已经很不容易了。
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