back fire

基本解释

Andrew Cole has given Wayne Rooney the perfect pick-me-up after the derby defeat at Eastlands – by backing him to fire the Reds to more silverware.
安德鲁。科尔在联赛杯的城市德比后赞扬了鲁尼，他认为鲁尼将为曼联轰下更多冠军。
forum.sports.sina.com.cn
And diplomats in New York worked on a UN Security Council statement backing the cease-fire initiative but failed to reach agreement on action to end the violence.
纽约联合国安理会声明停火、以结束暴力的行动的协议未能达成一致。
With the backing of the local political authorities, Mr McGuirk and his team resolved to evangelise, providing basic fire-safety advice, checking 350,000 homes and fitting 700,000 smoke alarms.
在当地政府的大力支持下，McGuirk和他的团队决定进行防火宣传，给人们提供一些基本有关防火安全的建议，他们检查了350,000户人家，并安装了700,000个烟雾警报器。

Sure, the Republicans lost a House seat by ejecting a moderate and backing a fire-breather.
ECONOMIST: Lexington
The Bush administration, apart from military support to Iraq and backing for the Lebanese cease-fire, has played little visible role in trying to counter Iran's drive to dominate a largely Muslim region of the world with command over its vast energy resources.
NPR: What Bush Says When He Talks About Security
Until then, they were fairly boring things, with most people understanding how they worked only because their neighborhood streetlights went on when they sensed darkness, smoke detectors sounded alarms and fire trucks beeped because motion sensors understood when they were backing up.
FORBES: How Sensor Networks Add to Context

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.