ageing population的用法和樣例：
例句
- Japan is facing the pressing issue of a declining birthrate and aging population.
日本正面臨著出生率下降和人口老化的壓力。 - More important, America's labor supply is growing more slowly as the population ages, the share of women working has leveled off and that of students who work has fallen.
更為重要的是，美國勞動力供給增長速度不及人口老化速度，且勞動力市場女性所佔份額趨近平穩，而學生所佔份額卻有所下滑。
