When a country is ageing (median age above 40), it again has a high dependency ratio, this time because of old people.

而当一个国家趋向老迈时(中位年龄在40岁以上)，依赖性比例仍然高，这是因为老人多的原故。

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When fertility is high and a country is young (median age below 20), there are huge numbers of children and the overall dependency ratio is high.

一个国家生育率高，表示这个国家很年轻（中位年龄在20岁以下），小孩数量庞大，依赖性比例相当高；

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The OECD expects Japan’s dependency ratio (of working-age to retirement-age citizens) to fall to 1.2 by 2050 and Germany’s to 1.6; Britain’s, by contrast, would be a relatively healthy 2.4.

OECD（经济合作与发展组织）预计到2050年日本的抚养比率（工作人口与退休人口的比率）会将降至1.2，德国则降至1.6；相反，英国会在2.4，相当稳健。

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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

To the extent that the least-skilled need help, we will be in a much better position to afford safety nets, and our main concern will be the age-old one of discouraging dependency.

FORBES: A Cheerful Welcome To The Robots, Our Future Work Overlords

Across Europe, the dependency ratio of older people (aged 65 and over) to those of working age (15-64) will double from one-to-four to one-to-two by 2050.

ECONOMIST: Economics focus