形容词
中文翻译：迁移的
同义词：
['transient', 'nomadic', 'migratory', 'migrant']
例句：
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1.Many birds are migratory, meaning they fly long distances to find food.
许多鸟是迁徙的，意味着它们飞很长的距离去寻找食物。
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2. The migratory bird population has been declining due to climate change.
由于气候变化，候鸟种群正在减少。
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3. Migratory species are often more vulnerable to environmental changes than resident species.
迁徙物种往往比定居物种更容易受到环境变化的影响。