萤的用法和样例：
例句
-
生物发光生物体的可见光发射，如萤火虫、彩色鱼类、真菌类和细菌
Emission of visible light by living organisms such as the firefly and various fish, fungi, and bacteria. -
她把好奇之心注入我们心中，使我们获得事实与真理，把它们像捕捉到的萤火虫一样掌握在手里。
She breathed curiosity into us so that we brought in facts or truths shielded in our hands like captured fireflies.
