back-fire

基本解释

So think back to those fire-safety lessons you learned in grade school.
所以回忆下上小学时候学的消防安全课。
The log-period dipole array is applied as a feed element for a back-fire antenna.
用对数周期振子阵作为背射天线的馈源。
A back-up fire will be prepared during the rehearsal phase in case of cloudy weather.
彩排的时候，会提前通过太阳光采集备用火种，以防取火仪式当天遇到恶劣天气。

The footage began with a squad of four U.S. soldiers trapped underwater in a sinking vehicle before flashing back to their fire-fight with Russian militants in the wind-swept capital of Azerbaijan, Baku — beginning in an abandoned school and ending in a crumbling construction site.
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The only back-up available was volunteer fire chief, Kent Brown, and two EMS workers, including the one Jones had filed a sexual harassment complaint against.
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And then, for a fifth time, they went back -- into the fury of that village, under fire that seemed to come from every window, every doorway, every alley.
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If a plan or project backfires, it has the opposite result to the one that was intended.
When a motor vehicle or its engine backfires, it produces an explosion in the exhaust pipe.