回複：*=*=* 《每日一句漢譯英》 *=*=*

一項針對超重和肥胖人群的研究發現，該類人群罹患膝關節骨性關節炎的風險遠高於正常體重的人群，但體育鍛煉並不會增大這種風險。

A research on overweight and fat group found that these people have higher risk of knee joint athritis than those of normal weight, but doing physical exercise does not add a bit to it.