有这样一种鸟,它们夫妇二人在相距千里的地方各自过冬,每年夏天却又同时归来繁育后代IT'S great to go on vacation, but it's also nice to come home.Migrating(迁徙) birds seem to feel the same way. Birds such asblack-tailed godwits(黑尾塍鹬 ……
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