fireflies
n. 萤火虫
n. 美梦成真（歌名）
例句
He saw fireflies flying and an idea came into his mind.
他看到萤火虫在飞，于是一个想法出现在他的脑海里。
He caught some fireflies in a cloth bag and hung it up as a lamp.
他抓了一些萤火虫放在一个布袋里，把它挂起来当灯。
Fireflies use their light for attracting mates.
萤火虫用它们的光来吸引配偶。
