BMI is a measure of weight relative to height, with different ratios falling into " underweight, " " normal weight, " " overweight, " and " obese" ranges.

BMI 是以体重和身高比计算出的数值，并以 “过轻”、“正常”、“过重” 和 “肥胖”等范围定义不同数值。

The research, based on a seven-year dietary analysis of 50,000 adults, found that body weight, measured by body mass index, corresponds with when we eat and how often we eat.

在对5万名成年人长达7年的饮食分析的基础上，研究发现体重指数（BMI）与进食时间和进食频率相关。