名词
中文翻译：小牛
同义词：
['cattle', 'calf例句：1. The cows are grazing in the field.（奶牛们在田野里吃草。）']
例句：
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1. The cows are grazing in the field.
奶牛们在田野里吃草。
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2. The calf is growing quickly and will soon be ready for market.
这只小牛长得很快，很快就要上市了。
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3. Cattle are an important source of food and labor in many countries.
牛是许多国家的重要食物和劳动力来源。