Your family doctor can help your daughter set realistic goals for body mass index and weight based on her personal weight history and overall health.

您的家庭医生可以根据您女儿过去的体重情况和总体健康状况，帮助您女儿设定现实的体重指数和体重目标。

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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。

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Those in large speed-dating sessions instead made choices based on quick and easy-to-assess characteristics such as age, height, body mass index, and weight.

而在大的约会活动中，人们则更倾向于依靠年龄、身高、三维以及体重等简单快速的特征来进行评定。

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They measured height, weight and body mass index - calculated by dividing weight in kilograms by the square of your height in metres.

BBC: Curvier women 'will live longer'

All models were required to have a body mass index -- a ratio of height and weight -- above 18, the minimum limit considered healthy by the World Health Organization.

CNN: Young models dying to be skinny

Jackson won't reach her goal weight of 164 pounds -- a healthy body mass index for her 5-foot-8 frame -- by her birthday in February.

CNN: Why you really should get 'Fit By 40'