age structure例句
- The age structure of the country is changing, with a growing proportion of elderly citizens.
该国的年龄结构正在变化，老年公民的比例不断增加。
- Understanding the age structure is crucial for planning educational services.
了解年龄结构对规划教育服务至关重要。
- The census revealed a significant shift in the age structure over the past decade.
人口普查显示，过去十年间年龄结构发生了显著变化。
