a lighting bug

• [美]萤火虫

a lighting bug的用法和样例：

例句

1. A firefly was shimmering on the wood doorpost.
   一只萤火虫，贴在木头门框上，闪闪发亮。
2. The difference between the right word and the almost right word is the difference between lightning and a lightning bug.
   正确的词语和几乎正确的词语之间的差别就好像闪电和萤火虫的差别一样。