十万个为什么·科学阅读30篇（5）
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How Do Fireflies Make Their Own Light?
萤火虫是如何自己发光的？
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Fireflies produce 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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They mix a chemical called luciferin with oxygen and an enzyme.它们将一种叫荧光素的化学物质与氧气和酶混合。
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No heat is produced, so it's 'cold light'.该过程不产生热量，因此被称为‘冷光’。
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Each firefly species flashes in a unique pattern.每种萤火虫都有独特的闪光模式。
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These patterns help them find mates at night.这些模式帮助它们在夜间寻找配偶。
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Some fireflies even synchronize their flashes in groups.有些萤火虫甚至能成群同步闪光。
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Scientists use luciferin in medical research today.如今科学家将荧光素用于医学研究。