The average lapse between first and second births in South Africa is almost four years.

在南非，第一和第二胎之间的年份一般为四年。

Nearly half of all first births in the US now take place outside marriage, according to a new study.

根据一项新的研究称，美国将近一半的第一胎发生于婚外情。

The average age at first birth is 26, up from 21 in 1970.

第一次生育的平均年龄为 26 岁，高于 1970 年的 21 岁。

The first birth of an emperor penguin chick in 13 years hatched on September 12th.

9月12日，13年来第一只帝企鹅雏鸟孵化。

Now it's become quite normal for women in their thirties, as we see with the world data, there's many countries where women have their first birth over the age of 30.

现在，对于三十多岁的女性来说，这已经变得相当正常，正如我们从全球数据中看到的那样，许多国家的女性在30岁以上才生下第一胎。

The report by the National Marriage Project finds that by age 25 just 38% of women would've married, but 44% have had a baby, for women as a whole, 48% of first births are outside wedlock.

国家婚姻项目颁布的这份报告显示25岁的女性中只有38%已经结婚, 但44%有了孩子, 作为整体一部分的女性, 48%的第一胎是非婚生育。