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oestrus
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音标：['ɛstrəs]
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解释：
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n. 发情，发情期；牛虻
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英文词源：
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oestrus
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oestrus: [17] Greek oistros had an extraordinarily wide range of meanings, from ‘madness, frenzy’ through ‘sting’ to ‘gadfly’, and including also ‘breeze’. If, as has been suggested, it is related to Latin īra ‘anger’ (source of English ire [13]), Lithuanian aistra ‘passion’, etc, ‘frenzy’ is presumably the primary sense, but in fact English originally adopted it (via Latin oestrus) as the genus name for a variety of horsefly or botfly. ‘Sting’ was taken up, in the sense ‘impetus, goad’, as a learned borrowing in the mid-19th century (‘They too were pricked by the oestrus of intellectual responsibility’, John Morley, On Compromise 1874), but oestrus was not used for ‘period of sexual receptiveness in female animals’ (based of course on the notion of sexual ‘frenzy’) until the end of the 19th century.
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The derived oestrogen dates from the 1920s.
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=> ire
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oestrus (n.)
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see estrus.
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双语例句：
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1. Male peacock: Bah, you are mean, old love sees my oestrus!
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雄孔雀: 呸, 你们下流, 老爱看我发情!
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来自互联网
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2. He increased the reproduction rate of rabbits by inducing oestrus.
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他使用催情的方法来提高兔子的繁殖率.
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来自互联网
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3. The duration and the interval of post - partum oestrus were 33.0 hours and 76.6 dars repectively.
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产后第一次发情时间和发情持续期分别为76.7天和30.0小时.
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来自互联网
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更多相关例句：
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Male peacock: Bah, you are mean, old love sees my oestrus!
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雄孔雀: 呸, 你们下流, 老爱看我发情!【期刊摘选】
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He increased the reproduction rate of rabbits by inducing oestrus.
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他使用催情的方法来提高兔子的繁殖率.【期刊摘选】
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