因此，当船只进入吊舱时，离开吊舱的水的重量与船只的重量完全相同。

So when a boat enters a gondola, the amount of water leaving the gondola weighs exactly the same as the boat.

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它和千克（10升蒸馏水的重量）一起构成了公制计量的基本单位。

Together with the kilogram, initially the mass of a decaliter of distilled water, it formed the basis of the metric system.

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首先，必须确定屋顶是否可以支持土壤，植物和水的重量。

First, it must be determined whether the roof can support the weight of the soil, the plants and the water.

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Fat has twice the calories per unit weight that protein or carbohydrate sugar has, as a consequence, has the greatest survival value.

单位重量中脂肪的热量含量,是蛋白质和碳水化合物的两倍,因此,脂肪才是最能维持生存的物质

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

As I mentioned before, fat has twice the calories per unit weight as protein and carbohydrate.

如我之前所说,单位重量中脂肪的热量含量,是蛋白质和碳水化合物的两倍

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选