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go off EXPLODEv adv [I]to explode or (of a gun) to fire bullets爆炸;（枪）发射A local radio station received an anonymous warning twenty minutes before the bomb went off.一家地方电台在炸弹爆炸前二十分钟收到匿名的警告。His gun went off accidentally as he was climbing over a fence.在他翻越栅栏时枪走了火。If a noise-making device goes off, it starts to ring loudly or make a loud noise.发出巨响The alarm should go off automatically as soon as smoke is detected.警报装置应该在探测到烟时马上自动拉响。Didn't you hear your alarm clock going off this morning?你今早没有听到你的闹钟闹响吗?The ambulance's siren was going off.救护车拉响了警报器。
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