消防员在演习中展示了如何使用火焰喷射器清理灌木丛。

The firefighters demonstrated how to use a ___flamethrower to clear dense bushes during the drill.

那个论坛用户是个喷子，总是在评论区挑起争吵。

That forum user is a ___flamethrower, always starting fights in the comments section.