backfiring/ˌbækˈfaɪr/动词(计划)产生适得其反的结果Her plans to make him jealous backfired on her when he started dating her best friend.她原本想让他妒嫉,没想到最后他却和她最好的朋友好上了。(引擎)发生回火I was woken by the sound of a truck backfiring.卡车引擎的回火声把我惊醒了。想跟读,去练习