Just looking at recent years, the change in age specific birth rates has been drastic.

仅从近年来的情况来看，各年龄段口出生率的变化是巨大的。

And birth rates for women in their teens and 20s reached record lows.

十几岁和二十几岁女性的生育率创最记录。

After the war there was a bulge in the birth rate.

战后出生率一度激增。

Which of these nations has the lowest birth rate?

以国家出生率最？

Leaders also feared abortion was contributing to the fall of birth rates among white women.

同时也担心堕胎会降生育率。

So far, boosting Japan's birth rate has been a losing battle.

到目前为止，提高日本的出生率一直是一场失败的战斗。

Prince Edward Island, it has an aging population and a declining birth rate.

爱德华王子岛，面临着口老龄化和出生率降的挑战。

All of these groups continue to have above-average birth rates.

所有这些族群出生率将继续维持在平均以上。

Birth rates continued to fall for teenagers and women in their 20s.

青少年和20多岁女性的生育率继续降。

Experts say there are many reasons for falling birth rates.

专家说，出生率降的原因有很多。

However, other experts say it is more likely that birth rates will fall.

然而，其他专家说出生率更有可能降。

Health experts say there is no single explanation for the falling twin birth rates.

健康专家表示，双胞胎出生率降没有单一的解释。

But from 2014 to 2018, the twin birth rates fell 4 percent.

但在2014年至2018年，双胞胎出生率降了4%。

But over the years birth rates fell. Families began to have fewer and fewer children.

但是这些年出生率降了，们要的孩子数开始越来越少。

And that other problem is an incredibly low birth rate.

另一问题是出生率极。

It will also help to increase the country's declining birth rate.

这也将帮助提高国家不断降的出生率。

A government report found the U.S. birth rate fell four percent in 2020.

一份政府报告发现，2020年美国出生率降了4%。

The nation's birth rate has also been going down for years.

多年来，该国的出生率也一直在降。

That means the effects of a falling birth rate are an even bigger problem.

这意味着出生率降的影响是一更大的问题。

South Korea, however, is not the only nation concerned about falling birth rates.

然而，韩国并不是唯一一担心出生率降的国家。