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It's one of our most important tools, and holds prominent place in many ancient philosophies and religions.
這是我們最重要的工具之一，并且在很多古代哲學和宗教中地位顯著。
The ancient Greeks believed that fire–along with earth, water, and air–was one of the four essential elements that made up the world.
古希臘人認為，火，土，水和氣是構成世界的四個基本要素。
We now know that the world's a lot more complicated, with over a hundred elements of matter which can be combined in a tremendous variety of ways.
如今，我們都知道世界的構成更加復雜，由上百種物質組成，同時這些物質又可以以無數種不同的方式結合。
This might leave you wondering where fire fits in. What exactly is fire?
因此，你可能會好奇，火從哪里來，火又是什么呢？
Watching a flame dance through the air, you might conclude that fire's a gas, like oxygen or carbon dioxide.
看到空氣中跳動的火苗，你可能會覺得火是一種氣體，像是氧氣，二氧化碳等氣體。
It's not. Fire can burn fuel that's a gas, or a liquid, or even a solid–as in the case of glowing charcoal.
實則不然?；鹂梢允箽怏w，液體甚至是固體燃料燃燒-如燃燒的木炭。
But the fire itself isn't any of these things.
但是火本身不屬于上述這些形態。
In fact, fire isn't anything at all.
實際上，火自身沒有形態。
It's not its own type of matter; it's something that matter can do.
雖然不是物質，卻能夠起到一些物質的作用。
譯文來自可可英語
