The meeting went off with a bang.

会议开得很成功。

These celebrations went off with a bang, people were having a blast.

这些庆祝活动以一道爆破声开始，人们都玩疯了。

The old gun went off with a bang.

那把旧枪“砰”地一声走响了。

For example, when you shoot a gun we might call that noise a bang: " The gun went off with a bang." It's a loud noise that some thing makes.

例如，当你开枪时，我们可能会把那种声音称为砰的一声：“枪响了。 ” 这是某种东西发出的巨大噪音。