枸杞在中国中老年人群体中大受欢迎。
In China, gouqi is largely popular among middle-aged and 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。
Eguchi's study examined the connection between sleep and heart disease among elderly people.
主要针对中老年人群，补充所需营养，使人体健康状况得到良好的改善。
They are primarily sold to middle—aged and elderly people to supplement their nutritional meeds and relieve age—related symptoms.
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