名词
中文翻译：周期性迁移
同义词：
['periodic migration', 'periodic movement']
例句：
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1.The researchers have observed periodic migration patterns in the animal population.
研究人员已经观察到动物种群中的周期性迁徙模式。
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2. The scientists believe that periodic migration is a natural phenomenon.
科学家们认为周期性迁徙是一种自然现象。
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3. The migratory birds are known for their periodic migration across continents.
候鸟以其周期性跨越大陆的迁徙而闻名。