n.不育症；不孕；不肥沃性，贫瘠性

Infertility is a common issue affecting many couples worldwide.
不孕不育是全球许多夫妇面临的一个普遍问题。
The couple has been trying to conceive for years, but their infertility remains unexplained.
这对夫妇多年来一直努力怀孕，但他们的不孕原因不明。
Infertility treatments such as IVF have revolutionized the possibilities for parenthood.
如试管婴儿等不孕不育治疗已经彻底改变了成为父母的可能性。
Male infertility accounts for approximately half of all infertility cases.
男性不育约占所有不孕不育案例的一半左右。
Endometriosis can sometimes lead to infertility in women.
子宫内膜异位症有时会导致女性不孕。
Lifestyle factors, like smoking and obesity, can contribute to infertility.
生活方式因素，如吸烟和肥胖，可能会影响生育能力。
Infertility can be a source of immense emotional stress for couples.
不孕不育对夫妻来说可能会带来巨大的精神压力。
Advanced maternal age often increases the risk of infertility.
母亲年龄偏大往往增加不孕的风险。
Some couples choose adoption as an alternative when faced with infertility.
当面对不孕时，有些夫妇选择领养作为替代方案。
Regular exercise and a balanced diet may help improve fertility in both men and women.
定期锻炼和均衡饮食可能有助于提高男女的生育能力。