形容词
中文翻译：迁移的
同义词：
['migration', 'migratory', 'migratory']
例句：
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1.Many birds migrate to warmer climates during the winter.
许多鸟类在冬天迁徙到较温暖的气候中。
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2. The migratory bird population has been declining in recent years.
近年来，候鸟种群数量一直在下降。
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3. The migration of birds is a fascinating phenomenon that scientists study.
鸟类的迁徙现象是科学家们研究的一个引人入胜的现象。