名词
中文翻译：牛
同义词：
['cow', 'herd', 'cattle', 'flock']
例句：
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1. The farmer has a large herd of cows in his farm.
这位农民在他的农场里有一大群奶牛。
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2. The cows graze on the grasslands outside the city.
这些奶牛在城市外的草原上吃草。
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3. The farmer needs to feed the cattle every day.
这位农民需要每天喂养牛群。