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Fire is a chemical reaction.
火是一種化學反應。
A fire needs oxygen and some kind of fuel.
火的產生需要氧氣和某種燃料共同作用。
This fuel–whether it's candle wax, wood, or gasoline–usually contains big molecules that have carbon atoms inside them.
這些燃料，不管是蠟燭、木材還是天然氣，他們通常都含有大量的碳分子。
You can think of these molecules as little containers of energy.
可以把這些分子當做小型的能量儲存體。
When they're allowed to combine with oxygen, this energy is released as heat and light.
當它們與氧氣結合時，這些能量會釋放光和熱。
Fire is a rapid chemical reaction known as oxidation.
火是一種快速的氧化化學反應。
Inside a fire, oxygen molecules break bigger molecules apart into carbon dioxide and water vapor.
在一團火中，氧分子將更大的分子分解成二氧化碳和水蒸汽。
All the heat and light of a fire comes from big, carbon-based molecules combining with oxygen.
火中的所有光和熱都來自于含碳的大分子與氧氣的結合。
So what is fire? It's not the fuel or the oxygen or the heat or the light.
那么到底什么是火？它不是燃料，不是氧氣，也不是光和熱。
Fire is what happens between all these things. It's a chemical reaction.
火就是上述因素之間產生的一種化學反應。
譯文來自可可英語
