十万个为什么·科学阅读30篇（6）
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How Do Fireflies Produce Their Own Light?
萤火虫是怎么自己发光的？
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Fireflies make light through a chemical reaction in their bodies.萤火虫通过体内化学反应发光。
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This process is called bioluminescence.这一过程称为生物发光。
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Two chemicals—luciferin and luciferase—mix with oxygen.两种化学物质——荧光素和荧光素酶——与氧气混合。
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The mixture creates cold light without heat.混合后产生不发热的冷光。
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Each firefly species flashes a unique pattern.每种萤火虫都有独特的闪光模式。
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Males and females use light to find mates.雄性和雌性依靠闪光寻找配偶。
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No electricity or batteries are needed for this light.这种光无需电力或电池。
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Scientists study firefly light to improve medical tools.科学家研究萤火虫发光以改进医疗工具。