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初看起来,女性一生中有40余年的时间具有生育能力,而实际上,具有怀孕能力的时间要少得多。因为女性并不是每个月里的每一天,每一年里的每个月都有生育能力,女性排出的卵子只在排出后的12～72小时内有受孕的可能。如此算来,女性有生育能力的时间是十分有限的。
At first glance, women have more than 40 years of fertility in their lifetime and, in fact, have much less time to conceive. Because women are not every day of the month, every month of every year have fertility, women’s eggs discharged only 12 to 72 hours after discharge may have conceived. So count, the time of female fertility is very limited.