以下为句子列表:
英文: A female comes into estrus a week or two after giving birth and, if she is not fertilized then, again about a month later.
中文: 生产后的雌马会在1~2周后进入发情期,如果这段时间没有怀孕,大约一个月后会再发情一次。
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英文: Anestrus: No sexual activity takes place. Anestrus lasts between three and four months.
中文: 休情期:没有性活跃发生的时期。通常持续三到四个月。
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英文: Bitches have their first estrus (also know as season or heat) after six months of age, although it can occur as late as 18 months to two years of age.
中文: 一些在母犬六个月龄后就会有第一次发情,有些则会迟至18个月甚至两岁。
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英文: Estrus recurs at intervals of approximately six months until late in life.
中文: 从一个发情期至第二个发情期之间约为六个月。
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英文: A Case of Ocular Myiasis Caused by Oestrus ovis in Human
中文: 人羊狂蝇(Oestrus ovis)蝇蛆病一例
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