以下为句子列表：
英文: Proestrus: The female attracts males, has a bloody vaginal discharge and her vulva is swollen. Proestrus lasts approximately nine days; the female, however, will not allow coitus at this time.
中文: 发情前期：母犬开始引诱公犬，阴道有血渗出，阴户涨大。发情前期约持续九天，不过，这段时间，母犬并不与公犬交配。
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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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