How Do Fireflies Make Light Without Heat?
萤火虫是如何不发热地发光的？
课文音频
Listen to the full story · 完整逐句/整段音频可在解锁后使用。
您仍可先看下方课文摘要；在阅读器可查看该书试读与权益说明。
课文
从第 4 课起，导读页仅展示部分正文，便于您了解难度与风格。
-
Fireflies produce light through a safe chemical reaction inside their bodies.
-
A substance called luciferin reacts with oxygen and an enzyme named luciferase.
Unlock full vocabulary & bilingual guide · 完整课文、逐句音频与全部译文请在解锁学习权益后于阅读器中查看。
Improve faster解锁本课完整体验