When they invented fire insurance, in the 1600s, there was a lot of skepticism because anyone can burn down their house.
十七世纪时,人们发明了火险,当时存在很多质疑,因为任何人都可以烧毁他们的房子。
It's the problem that sometimes people knock over an oil lamp in their home and they burn their own house down.
有时候会出现这种问题,一个人把自己家里的油灯弄翻了,然后把自己的房子点着了
You get sun burn, your skin peels, you lost some items in your body It doesn't really matter.
你被晒伤,脱皮了,你丢失了身体的微粒,但没有关系。
They would bomb it, they would burn it, they would put it in this container inside water, and see how high the water temperature raises and that would give you a sense of the number of calories that it has.
研究人员会燃烧它,放入浸在水里的量热器,然后观察水温上升了多少,我们就对这种食物热量有所了解了
It could be me that-- my cabin could burn down and I would freeze to death in the winter.
因为也许中招的会是我-,我的房子可能被烧毁,冬天我可能会被冻死。
As we'll discuss in the class, and most of you probably know this, your body weight is a function of how many calories you take in and how many calories you burn off through metabolic processes but also physical activity.
我们将会讲到,而且你们中的大部分人可能也知道,你的体重随着卡路里的摄取量,和代谢中的消耗量而变化,还跟肢体活动有关
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