1、Nulliparity is a medical term used to describe the condition of a woman who has never given birth.
没有生育史是用来描述一个从未分娩过的女性的医学术语。

2、The study found that nulliparity was associated with an increased risk of certain health conditions.
该研究发现，没有生育史与某些健康问题的风险增加有关。