To conserve energy, migratory birds prefer tailwinds, and are willing to wait for good weather.

为了节省体力，鸟儿们更喜欢顺风，它们期待着天气转好。

youdao

To conserve energy, migratory birds prefer tailwinds, and are willing to wait for good weather.

为了节省体力，鸟儿们更喜欢顺风，它们期待着天气转好。

youdao