名词
中文翻译：归巢率
同义词：
['return rate', 'nesting rate']
例句：
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1.The birds are known to return to their nests after a long absence.
鸟类在长时间离开后会返回它们的巢穴。
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2.The study found that the return rate of migratory birds was higher than expected.
研究发现，迁徙鸟类的回归率高于预期。
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3.The research team has been monitoring the bird population's return rate for several years.
研究团队已经监测了几年的鸟类回归率。