A man partnered with an infertile woman is, infidelity aside, as evolutionarily irrelevant as if he were sterile himself.
在不考虑外遇的情况下，一个男性与一个不能生育的女性作伴侣，进化不谐的程度和他自己不能生育差不多。In mammals, females are XX while males are XY so a woman should never be able to provide the necessary Y chromosome genes to produce a son.
在哺乳动物中，雌性的性染色体是XX，而雄性的是XY，所以一个女人是绝不可能产生男性不可缺少的Y染色体基因而生育男孩的。Another finding was that fertility rates have declined in those parts of Morocco and Turkey that export labour to Europe.
报告的另一项发现是，在摩洛哥和土耳其向欧洲输出劳动力的地区，生育率有所下降。But Prof Paabo said he was unclear if the couplings had led to children, of if they were capable of producing offspring.
不过，帕博教授表示，他并不清楚他们的结合是否产生了后代，或者他们是否能够生育后代。That definitely came out of having my first child and thinking about what I'd want to pass on from my family and from my husband's family.
这样做当然是来自生育自己第一个孩子的缘故，心里想着自己要把自己家族和丈夫家族的什麽传下去。In this article, the authors pose the question of how food prices might have influenced birth and death rates.
在这篇文章中，作者们提出了这样一个问题，食物的价格如何影响生育和死亡率。The prevalence of incontinence increases with age, and in women it is often associated with childbearing and the menopause.
尿失禁的流行率随着年龄而增长，并在妇女往往是与生育和绝经期。He said he brought up family planning in meetings with high governmentofficials here.
他说，在和政府高官开会时，他提出了计划生育建议。Addressing a conference in eastern China, the head of the Population Planning Commission Li Bin said the country faced major changes.
在中国东部举行的会议上发表讲话时，中国人口与计划生育委员会主任李斌表示，中国面临巨大的挑战。