有闹钟响的意思，go off 常用来表示发出声音，如（钟声/警笛等）响起、（炸弹）爆破。（武器被）击发等。另如：
The siren went off at noon. 警笛在正午鸣响
A few minutes later the bomb went off, destroying the vehicle. 炸弹几分钟后爆炸，炸毁了那辆车。
有闹钟响的意思，go off 常用来表示发出声音，如（钟声/警笛等）响起、（炸弹）爆破。（武器被）击发等。另如：
The siren went off at noon. 警笛在正午鸣响
A few minutes later the bomb went off, destroying the vehicle. 炸弹几分钟后爆炸，炸毁了那辆车。
