dependency ratio

基本解释

More children would increase the dependency ratio until they were old enough to join the labour force.
雖然生育更多的孩子，在他們達到工作年齡加入勞動力之前，“撫養比率”會上陞。
More children would increase the dependency ratio until they were old enough to join the workforce, but reduce labour shortages in the long term.
孩子多了，在他們長大到有勞動能力之前會增加撫養比率，但是從長遠的眼光看會減少勞動力短缺。
China’s one-child policy will keep birth rates low, but as life expectancy continues to increase, so will the dependency ratio, reducing the country’s potential for growth.
中國的獨生子女政策將保持人口出生率低下，但是由於平均壽命繼續提高，撫養比率將會上陞，這將降低國家的發展潛力。

It's mirrored in the soaring dependency ratio, which is the population of children and elderly divided by the population of active workers.
FORBES: Africa and economics
That means China's old-age dependency ratio (which compares the number of people over 65 with those aged 15 to 64) will soar.
ECONOMIST: Demography
In rural areas the dependency ratio will rise far more steeply than in cities as young people move out and the elderly stay behind.
ECONOMIST: The consequences of an ageing population