body-mass index

基本解释

A body-mass index, or BMI, of 18.5 to 24.9 is considered “normal”; from 25 to 29.9 is considered “overweight.”
身体的BMI指数，从18.5到24.9为“正常”；从25到29.9为“超重”。
Mothers had a higher body-mass index and didn't eat as healthily as childless women, chugging more sugary drinks and eating more total calories and saturated fat.
作为母亲，拥有一个更高的体重指数，而且不能跟没有孩子的女性吃的一样健康，她们咕咕地喝更多含糖饮料和吃更多含总热量和饱和脂肪的食物。
The universal standard introduced by the WHO for assessing weight is the Body-Mass Index (BMI): one's weight in kilograms divided by the square of one's height in meters.
WHO所引用的衡量体重的常规标准时BMI：就是用一个的体重（千克）除以他的身高（米）的平方。

So at a given level of overweight out here -twenty-seven, twenty-nine, thirty-one, thirty-three are the body mass index, the women are more likely to get Diabetes then the men are.
在超重情况下,如果体重一定,这里的27,29,31,33,表示体重指数,女性比男性更易患糖尿病
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选
First is the body mass index, you're going to see this a lot and you--some of you probably know about it already because it's out there in the popular literature.
首先是体重指数,我们会经常碰到这个概念,你们也许已经知道这个概念了,它经常在科普读物中出现
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

By controlling for individual and environmental influences on weight, such as income and health, they then measure whether food-price changes affect body-mass index (BMI).
ECONOMIST: Does a tax on junk food make sense?
In fact, an experiment showed that greater Facebook use was associated with a higher body-mass index and increased binge eating, as well as a lower credit score, and higher levels of credit card debt for consumers with many close friends in their social network.
FORBES: Eating Too Much? Blame It On Facebook, Not Holiday Treats

A person's body mass index is a measurement that represents the relationship between their weight and their height.