I mean, the US and Canada, they stand out as still growing despite below replacement fertility in both.

我是说，尽管美国和加拿大的生育率均低于世代更替水平，它们的经济还在增长。

At the other extreme, we have more than 60 per cent of the global population today already living in a country that is below replacement fertility.

另一个极端则是，今天全球60%以上的人口生活在处于生育更替水平之下的国家。