螢火蟲用英語是：firefly。

firefly 英[?fa??fla?] 美[?fa??rfla?]

n. 螢火蟲;

[例句]A firefly is a type of beetle.

螢火蟲是一種甲蟲。

In joy and sorrow, I will be my own firefly.

在喜悅和哀痛，我將是我自己的螢火蟲。

A sympathetic firefly would have been enough for me.

如果有一只螢火蟲同情地陪伴我，我就知足了。

This is actually the first time I have seen a firefly, so to me it felt amazing.

這實際上是我第一次看到螢火蟲，所以覺得非常特別。

If you have ever seen a firefly then you have witnessed the same process in action.

如果你曾見過螢火蟲，那么你其實就已經目睹了同樣的運作原理。