It is calculated by dividing a person's weight in kg by their height in meters squared, and a BMI of between 19 and 25 is considered healthy.

它的计算方法是用一个人的体重（公斤）除以身高（米）的平方，BMI 在19到25之间被认为是健康的。

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By the way, it is important not to forget that the balloon weighs about 2 kg and this weight has also to be lifted.

顺便说一下，不要忘记气球本身的重量，气球重2千克，这部分重量也是要被提升的。

youdao

The standard weight for a child of Ding's age and height should be 30 kg, so she has a serious weight problem.

对于小薇年纪和身高的标准体重应该30公斤，所以她存在严重的超重问题。

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Brief exposure to high levels of PCBs and dioxins may cause skin lesions and affect the liver (the tolerated daily intake for dioxin is about 1 picogram - one trillionth of a gram - per kg body weight).

CNN: THE GREAT DIOXIN SCARE

The combined thrust from its two engines - at least 50, 000 lb (22, 680 kg) - is more than its weight with fuel and weapons - so it can accelerate even when going straight upwards.

BBC: News | In Depth | Military Fact Files

Jackie also was struggling with her weight, at one point hitting 64 kg on a 157-cm frame.

CNN: For Better Or For Worse