The body mass index is a tool used to determine the healthy weight range for a particular height.

体重指数是一种用于根据特定身高来决定体重范围的工具。

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The researchers give warning that everyone should be at the lower end of the healthy weight range.

研究人员警告说人人都应该把体重保持在最低的健康范围内。

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The recommended weight gain for a woman within the normal weight range for her height is 25 to 35 pounds.

对在正常体重范围内的女性建议的体重増加量根据身高是从25磅到35磅。

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An Air Accidents Investigation Branch (AAIB) report said she weighed less than the recommended pilot weight range for the glider.

BBC: Glider crash site near Ashbourne

"When I got to 200 pounds, I decided, well, 'Why don't I go for a weight that's a healthy weight range for my height, '" said Welch.

CNN: Tired of slights, embarrassment, man sheds 87 pounds

Pilots control hang gliders by shifting their own body weight, but the investigation found the teenager weighed less than the recommended pilot weight range for the glider.

BBC: Glider crash site near Ashbourne