名词 backfire:

1. the backward escape of gases and unburned gunpowder after a gun is fired

2. a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine

3. a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path

4. a miscalculation that recoils on its maker

动词 backfire:

1. come back to the originator of an action with an undesired effect

2. emit a loud noise as a result of undergoing a backfire

3. set a controlled fire to halt an advancing forest to prairie fire

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