Sorry, I don't mean to butt in.

对不起，我不是故意要插一杠子。

I didn't ask you to butt in on my private business.

我没请你干预我的私事。

He was going to butt in when his mother darted a look of disapproval at him.

他刚要插嘴，妈妈瞥了他一眼。

We're gonna kick butt in tonight's game.

我们要在今晚的比赛中积极取胜。

Sorry to butt in.

抱歉，打岔一下。