名词
中文翻译：纯种
同义词：
['purebred', 'pure-bred例句：1. The horse is a straightbred racehorse.（这匹马是纯种赛马。）']
例句：
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1. The horse is a straightbred racehorse.
这匹马是纯种赛马。
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2. She was raised on a farm and knows all about straightbred cattle.
她在农场长大，对纯种牛非常了解。
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3. The breeder bred the dog to be a straightbred retriever.
这个繁育者培育了一只纯种拉布拉多寻回犬。