当把雌性牛鹂单独养在隔音的房间里，让它们听到雄性的歌声，它们就会表现出交配行为。
When female cowbirds raised in isolation in sound-proof chambers were exposed to recordings of male song, they responded by exhibiting mating behavior.
当雌性牛鹂被单独养在隔音的房间里，听到雄性歌声的录音，它们就会表现出求偶行为。
When female cowbirds raised in isolation in soundproof chambers were exposed to recordings of male song, they responded by exhibiting mating behavior.
雌性赫里福种实用牛的基因族的基因族已经被重组，这将是农业生产主要改进的一个起点。
The genome of a female Hereford cow has been sequenced, which could be a starting point for major improvements in the agricultural industry.
长颈鹿是反刍动物，因而属于牛类和鹿类。雄性和雌性长颈鹿都有隐藏的角。
A giraffe chews its cud (3), and therefore is related to cattle and deer. Both the male and female have short covered horns.
长颈鹿是反刍动物，因而属于牛类和鹿类。雄性和雌性长颈鹿都有隐藏的角。
A giraffe chews its cud (3), and therefore is related to cattle and deer. Both the male and female have short covered horns.
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