Middle and elderly patients

• 中老年

Middle and elderly patients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. This system can be used to the high contagious disease and old patients.
   该系统特别适用于高传染性疾病的治疗与中老年患者。