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1. The study found that the ovulation rate of women aged 30-40 is higher than thatof women aged 20-30.
研究发现，30-40岁女性的排卵率高于20-30岁女性。
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2. The doctor explained that the ovulation rate is influenced by various factors, including diet and exercise.
医生解释说，排卵率受多种因素影响，如饮食和运动。
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3. The researcher analyzed the data to determine the correlation between the ovulation rate and fertility rates.
研究者分析数据，以确定排卵率与生育率之间的相关性。