a true bug: brightly colored bug that can exude a stain
a criminal who illegally sets fire to property 同义词：arsonist, incendiary,
The firebug, Pyrrhocoris apterus, is a common insect of the family Pyrrhocoridae. Easily recognizable due to its striking red and black coloration, it is distributed throughout the Palaearctic from the Atlantic coast of Europe to northwest China.
例句与用法
1.
As for dede , he ' s an innocent firebug 迪迪呢，是个无辜的纵火犯。
2.
There ’ s firebug loose in the city 城里有一个逍遥法外的纵火犯。
3.
Firebugs may know the key : who is lost in whose eyes 夏虫们也许知道答案，谁迷失在谁的温柔目光里。
4.
That was until one day , when a telescope revealed the truth . the bird was happily enjoying the bodies of firebugs smeared on the window 直到有一天，望远镜使得一切真相大白。原来，窗上粘满了飞萤的尸体，那鸟儿正吃得不亦乐乎呢。
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