Most rich countries have rapidly ageing populations.

多数富裕国家拥有快速老龄化的人口。

youdao

Politicians have failed to control the costs of ageing populations for years.

多年来政客一直未能控制老龄化人口的成本。

youdao

With ageing populations and low birth rates, the European Union needs more people.

随着欧洲的老龄化群体的增多以及出生率的下降，欧盟需要更多人口（来补充）。

youdao

Europe had much to ponder before the crisis, from ageing populations to energy security.

ECONOMIST: Charlemagne

Both countries have ageing populations, a bloated capital stock, and vested interests opposed to change.

ECONOMIST: Lands of the cautiously rising sun

Countries have varying underlying debt burdens and face differing pressures from ageing populations.

ECONOMIST: The world economy