名词
中文翻译：Unknown
同义词：
['cattle', 'calf', 'young cow', 'young bull']
例句：
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1. The farmer has a small herd of cattle in his farm.
这位农民在他的农场里养了一群牛。
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2. The calf is growing fast and will become a big cow soon.
这头小牛长得很快，很快就会成为一头大牛。
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3. Young cows are often used for breeding purposes.
年轻的牛通常用于繁殖。