鸟类生物学；鸟类学
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鸟类生物学；鸟类学；鸟类生物学；鸟类学
the scientific study of birds, equivalent to ornithology
She specializes in avian biology at the university.
她在大学专门研究鸟类生物学。
鸟类生物学；鸟类学
the scientific study of birds, equivalent to ornithology
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