estrous
['estrəs]
adj.
（雌性动物的）动情期的;
求偶期的;
有发情期特征的;
（雌性动物的）性欲冲动的;
例句:
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Objective To explore the effect of apigenin on estrous cycle in normal adult female S - D mice.
目的探索芹菜素对正常雌性大鼠性周期的影响.
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However, the lev - els of MP _ 4 in the estrous period were high, and the quality of embryos was bad.
而在发情日, MP_4含量高, 则胚胎质量差.
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'S estrous cycle lasts when she is sexually receptive towards a stallion.
来自THETIMES
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One may argue that female chimps and bonobos are more likely than humans to have multiple partners during an estrous.
来自SA