妊娠
孕妇
妊娠三时期 人类的妊娠持续9个月，为了理解和叙述方便起见，传统上，我们将它分为等时（三个月）的三个时期，每一个时期持续3个月。
Pregnancy
The Woman During Pregnancy
The Three Stages of Pregnancy A human pregnancy lasts 9 months, and, in order to understand and describe it better, one traditionally divides it into three stages of equal length (trimesters), each lasting 3 months.
[Course 2] [Description] [How to use it] [Introduction] [Conception] [Pregnancy] [Beginning] [Development] [During Pregnancy] [Birth] [Infertility] [Contraception] [Abortion] [Additional Reading] [Examination]
