这个箱子比那个箱子重多少千克?
去年这个农场生产了多少千克牛奶?
多少千克?一千克。
A typical problem that you may have done in your first pass at Newton's law, someone tells you a force of 36 Newtons is acting on a mass of whatever, 4 kilograms; what's the acceleration?
在你们第一次接触牛顿定律时,可能见过这么一道典型题目,告诉你,一个 36 牛的力,作用在一个物体上,4 千克吧,问加速度是多少
A kilocalorie, and this is really what we--when people talk about calories, how many calories in food, it's really kilocalories that they're referring to, but that would be the energy required to raise a kilogram of water one degree centigrade.
一千卡,是人们讨论卡路时是真正用的单位,当提起食物中的热量,人们指的是多少千卡,一千卡,是将一千克水提升1℃所需要的热量
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