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1.The researchers concluded that teenage girls who did a maximum of 80 minutes exercise a week had a 16 per cent lower risk of dying from cancer and other diseases.
a maximum of上限为
This hall holds a maximum of seventy people.
这厅最多能容纳七十人。
2.The researchers said that in general, women would live longer if they did just 15 minutes of exercise a day in their teens.
in general通常；大体上
Residents in general are poor and undereducated, and live in sub-standard housing.
居民们普遍都很贫穷，受教育程度低，居住条件较差。
3.Head researcher Dr Sarah Nechuta said that even if women in their twenties, thirties and forties did not work out, doing exercise as a teen would increase longevity.
work out锻炼
While the lads are golfing, I work out in the gym.
小伙子们打高尔夫球的时候，我在健身房锻炼。
