back-fire
柯林斯詞典
1. V-I If a plan or project backfires, it has the opposite result to the one that was intended. 事與愿違
The president's tactics could backfire. 總統(tǒng)的策略可能會事與愿違。
2. V-I When a motor vehicle or its engine backfires, it produces an explosion in the exhaust pipe. (機(jī)動車或引擎) 回火
The car backfired. 這輛車回火了。
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