The study also found that during pregnancy, first-time mother monkeys had higher levels of cortisol than did those who had had several offspring.
研究同时还发现在怀孕期间,第一次为人母的猴子的皮质醇要比生过几次孩子后的猴子水平高很多。
Fertility is an issue because women are delaying getting pregnant until their 30s — the average age now for a first-time mother is 30.
生育是一个大问题,因为很多女性直到三十多岁才怀孕,现在的第一次生育的母亲的平均年龄是三十岁。
We also discovered that being a first-time mother had no effect on quality of life scores.
我们还发现,第一次当妈妈对生活质量分数并没有影响。
Standing more than three feet tall and weighing nearly 260 pounds, the calf was born to 9-year-old first-time mother Temi on May 6.
5月6日,9岁的象妈妈特米产下了她的第一个象宝宝,高达三尺,重达260磅。