vi.发生回火；适得其反，事与愿违的结果；n.逆火； 变形： 过去式：backfired过去分词：backfired现在分词：backfiring第三人称单数：backfires 英英释义： backfire[ 'bæk,faiə ]n.the backward escape of gases and unburned gunpowder after a gun is fired同义词：blowbacka loud noise made by the explosion of fuel in the ma