back fire

基本解釋

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.
安德魯?？茽栐诼?lián)賽杯的城市德比后贊揚了魯尼，他認為魯尼將為曼聯(lián)轟下更多冠軍。
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.
紐約聯(lián)合國安理會聲明?；?、以結束暴力的行動的協(xié)議未能達成一致。
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.
在當?shù)卣拇罅χС窒拢琈cGuirk和他的團隊決定進行防火宣傳，給人們提供一些基本有關防火安全的建議，他們檢查了350,000戶人家，并安裝了700,000個煙霧警報器。

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.