Premature explosion of fuel in the intake manifold of an internal-combustion engine.

逆火(燃料进内燃机时，过早的爆炸)。

A fire started to check an advancing forest or prairie fire by clearing an area.

迎火(把森林或草原上的一块地带先放火烧光，以阻止野火蔓延)。

To experience a backfire.

产生逆火。

To have an effect opposite to that planned.

(计划等)招致相反效果；产生事与愿违的恶果。