The engine keeps backfiring all the time.
发动机老是回火.
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.
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.
The next day Dad set out, his old pickup backfiring as he headed dirt road.
第二天,爸爸开着他那辆老掉了牙的小吨位货车去拜访当地的地主.
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