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1·In a study of 33 years of trends in Body Mass Index across 200 countries, the scientists found that people worldwide are getting heavier and that most of the rise is due to gains in BMI in rural areas.

在一项对200个国家33年内体重指数趋势的研究中，科学家们发现，世界各地的人们体重越来越重，而这主要是由于农村地区体重指数的增加。

2·Researchers have shown that body mass index is related to wages and income.

研究人员表明体重指数与工资收入有关。

3·Calculate Your Body Mass Index (BMI).

计算身体质量指数(BMI)。

4·Your body mass index (BMI) is greater than 30.

你的体重指数(BMI)大于30。

5·A healthy body mass index (BMI) is between 18 and 25.

健康的身体质量指数(BMI)应介于18到25之间。

6·BMI, or body mass index, is a ratio of weight to height.

身体质量指数，是体重和身高的比例。

7·Obesity is commonly measured by body mass index, or BMI.

肥胖通常使用体重指数（BMI指数）来衡量。

8·It is most commonly measured by Body Mass Index (BMI).

通常采用体重指数(BMI)来衡量。

9·Obesity is defined by having a Body Mass Index (BMI) of over 30.

肥胖，界定为体质指数(BMI) 30以上。

10·If your body mass index is between 20 and 24.9, you're golden.

如果你的体重指数在20-24.9之间，恭喜你，因为你拥有一个健康的体型。