科学家们调查了82种燕雀，包括麻雀，鸽子和所有在欧洲中心12座城市落脚的小鸟。
Scientists surveyed 82 species of passerine birds, including sparrows, pigeons and anything that perches, in and around 12 cities in central Europe.
科学家们调查了82种燕雀，包括麻雀，鸽子和所有在欧洲中心12座城市落脚的小鸟。
Scientists surveyed 82 species of passerine birds, including sparrows, pigeons and anything that perches, in and around 12 cities in central Europe.
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