study in couple months
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
The study concluded that in a couple who prove ultimately to be fertile, the probability that it will take more than 12 months to conceive nearly doubles from around 8% when the man is under 25 to around 15% when he is over 35.
BBC: Men 'have a biological clock'
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