ageing trend

• 老龄化

ageing trend的用法和样例：

例句

1. China's population is ageing and India's schools are rotten.
   中国的人口正步入老龄化阶段，而印度的学校教育腐朽过时。
2. An endowment system will be established to meet the trend of population aging.
   建立适应老龄化发展趋势的养老保障体系。