middle- aged and elderly

• 中老年

middle- aged and elderly的用法和样例：

例句

1. Nowadays we find elderly models in fashion shows.
   时装表演现在有中老年模特。
2. Eguchi's study examined the connection between sleep and heart disease among elderly people.
   江口博士的研究在中老年人群中，睡眠与心脏病之间的联系。