鸟类研究；鸟类学
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鸟类研究；鸟类学；鸟类研究；鸟类学
the scientific study of birds; ornithology
She has devoted her life to bird study.
她一生致力于鸟类研究。
鸟类研究；鸟类学
the scientific study of birds; ornithology
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Dictionary facts from AI_SUPPLEMENT.