高龄化是指年龄在 80 岁以上的老人群体占全体老人(大于 60 岁或 65 岁)的比例趋于上升的过程。高龄化与老龄化同是反映人口年龄结构的“老化”现象的指标,两者的计算公式如下: 老龄化=(60 岁及以上老年人口数/全体人口数)* 100% 高龄化=(80 岁及以上老年人口数/60 岁及以上老年人口数)* 100% 老龄化是老年人口占总人口的比例,高龄化是高龄老年人口占老年人口的比例。也就是说,高龄化是在老龄化的基础上孕育出来的,是“老龄人口的老龄化”。
注:高龄化比例是指65岁以上的老年人口在总人口中所占比重。
Note: The "aging population" refers to persons aged 65 years or older and is quantified here as a percentage of Japan's total population.
古巴生产不足且人口正在高龄化,偷窃和旷职在全国各地职场屡见不鲜。
Cuba does not produce enough and its population is ageing. Theft and absenteeism are rife in workplaces across the island.
如果广播电视正在优雅地老去(要归功于注射肉毒杆菌),报纸更是竞相高龄化。
If broadcast television is growing old gracefully (helped by Botox injections), newspapers are racing towards senescence.
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