Only about 20 percent of Americans get the minimum level of exercise recommended by the government, which is 150 minutes a week of moderate to vigorous physical activity.

只有大约20%的美国人达到了政府推荐的最低锻炼水平，即每周150分钟中等到剧烈的体育活动。

In that case, the findings showed that the GREATEST mortality risk reductions only occurred in those with a high-quality diet paired with anywhere between 30 minutes to 2 hours of daily moderate to vigorous physical activity.

在这个案例中，调查结果显示，死亡风险能够最大限度降低的情况仅发生在那些进行高质量饮食并每天进行 30 分钟至 2 小时中等至剧烈运动的人身上。