名词
中文翻译：Unknown
同义词：
['cow', 'cattle', 'herd', 'flock']
例句：
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1. The farmer has a large herd of cows in his farmyard.
这位农场主的农场里有一大群奶牛。
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2. The cows graze on the lush green grass.
这些奶牛在郁郁葱葱的草地上吃草。
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3. The farmer milks the cows every morning before he goes to work.
这位农场主每天早上去工作前都会给奶牛挤奶。