The engine keeps backfiring all the time.
发动机老是回火.
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The EPA's rules about what constitutes hazardous waste are backfiring against the nationwide recycling effort.
环保署关于有害物质的法规同全国资源回收的工作正好唱反调.
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A sudden report rang out -- like the sound of a car backfiring.
突然响起一声爆裂声 —— 像汽车的逆火声.
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