backfires的音标：...

v.（内燃机等）发生逆火( backfire的第三人称单数 )，发生回火，（枪炮）向后爆发，发生意外...

If the engine backfires , the sudden pressure in the intake manifold forces the valve back.如果发动机回火, 进气歧管骤增的压力就迫使阀门向后移动.Also , this is why changing menus dynamically sometimes backfires.这就是为什么动态地改变菜单有时候事与愿违.My old car bac...