Research published last week at the International Aids conference in Vienna by the UK's Health Protection Agency shows that HIV rates are increasing among people of middle age.
上周，在维也纳举行的国际艾滋病会议上，英国健康保护局发布的研究显示艾滋病毒比率在中年人群中呈增长趋势。
In the Leeds study, young people were more likely to be Internet addicted than middle-aged users, with the average age of the addicted group standing at 21 years.
利兹大学的研究结果显示，年轻人比中年人更容易患上网瘾，上瘾人群的平均年纪在21岁左右。
With research showing that cells start to die ten to 20 years before the symptoms of Alzheimer's become evident, it could allow people to be screened in middle age for signs of the disease.
研究显示，阿尔茨海默病出现明显症状前10到20年，细胞就开始死亡，这就使人们能在中年时进行甄别以发现疾病的迹象。
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