老年学

例句：

1. 1. Gerontology is a field of study that focuses on the social and economic issues associated with aging.
   老年学是一门专注于与老龄化相关的社会和经济问题的学科。
2. 2. The geriatrician is a doctor who specializes in caring for older people.
   老年医生是专门照顾老年人的医生。
3. 3.As we age, it's important to consider the impact of our actions on the environment and society.
   随着年龄的增长，考虑我们的行为对环境和社会的影响是很重要的。