以下为句子列表：
英文: Because both unexplained infertility and immunologic infertility are treated with intrauterine inseminations, the usefulness of sperm antibody testing is limited.
中文: 因为不论是原因不明的不孕或免疫抗体造成不孕,解决的方法都是做人工授精.
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英文: There could be tens of thousands of women experiencing fertility problems and maybe under partially going IF when what they need to do is just cut out trans fats.
中文: 在数千妇女中，有几十个有生育问题，其中一部分采取人工授精解决问题，而她们真正需要做的也许只是停止食用反式脂肪酸。
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英文: A low fertility rate and increased life expectancy are the main reasons behind the rapid aging.
中文: 出生率低和人的寿命的增长是造成加拿大人口老年化速度增快的主要原因。
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英文: A maverick U.S.-based fertility expert is due to launch an international search today for a woman willing to be the first surrogate mother for human cloned embryos.
中文: 美国一位个人生育科学家今天将发起一项世界范围内的搜寻，寻找一位女性自愿担当第一个人类科隆晶胚的代孕母亲。
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英文: A purposive sampling method was used to recruit 54 mothers attending an In Vitro Fertilization/Embryo Transfer and Tubal Embryo Transfer program at an infertility center in central Taiwan.
中文: 本研究采立意取样，样本来自于中部某不孕症研究中心接受胚胎植入成功怀孕的幼儿母亲，共收取54位个案。
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