The fertility number is much lower than the rate of 2.1 per woman that would be needed to keep South Korea's population stable.

这一生育率远低于维持韩国人口稳定所需的平均每名女性生育2.1个孩子的水平。

As recently as 2010, the birth rate to New Zealand was still 2.1 children per woman on average precisely at the level required to keep the population stable.

就在 2010 年，新西兰的出生率仍然是平均每个妇女 2.1 个孩子，正好达到保持人口稳定所需的水平。