ageing of population

例句：

1. 1. The elderly need more care and support than younger people.
   老年人需要更多的照顾和支持。
2. 2.As the population ages, there is a growing demand for healthcare services.
   随着人口老龄化，对医疗保健服务的需求日益增长。
3. 3.The government has launched a campaign to promote healthy lifestyles among the aging population.
   政府已经发起了一场运动，旨在促进老年人的健康生活方式。