We'll need to reduce the weight by half.

我们得把重量减轻一半。

《牛津词典》

My mother was told to lose weight by doing exercise every day.

我妈妈被告知要每天锻炼来减肥。

youdao

For those who are overweight or obese, they could receive the bonus if they reduce their weight by 10% during the year.

对于那些超重或肥胖的人来说，如果他们在这一年中将体重减少10%，他们就可以获得奖金。

youdao

Different explanations are offered for America's weight problem a problem increasingly shared by other countries.

VOA: special.2009.08.06

And so the value of with i will be the value of i plus whatever I can get using the remaining items and decrementing the weight by the weight of i.

所以装上i之后的总价值,就是i的价值加上剩下物品中,符合条件者的所有价值,再在剩余重量中减去i的重量。

麻省理工公开课 - 计算机科学及编程导论课程节选

So, it's a trivial matter, by looking at what is the weight and how far does it drop, to say OK, how much work is done by the paddle wheel.

好，让我们看看重物的质量,以及它下落的距离，就知道桨轮做了多少功。

麻省理工公开课 - 热力学与动力学课程节选

This time, he was going to focus on losing weight by restricting his diet first.

CNN: From 'sumo wrestler' to distance runner

Alta's technology can reduce that battery weight by 70 percent, saving approximately 25 pounds of pack weight.

ENGADGET: Alta Devices claims world's lightest, most efficient military solar chargers

The brains of those aged 40 and older decrease in volume and weight by 5% every ten years.

ECONOMIST: The ageing brain