He burst in on the meeting.

他闯进来打断了会议。

He burst in on our conversation.

他打断了我们的谈话。

He'll be burst in on us at any moment.

他随时会出现在我们面前。

They burst in on me while I was working.

我在工作时他们突然打断了我。

They burst in on me while I was working.

我正在干活时他们突然来了，打断了我的工作。