Sorry to barge in, but I couldn't help overhearing what you were saying.对不起打断一下,我刚才碰巧听见了你们的谈话。I'm sorry to barge in on you like this.很抱歉这样闯进来打扰你。I'm sorry to barge in like this, but I have a problem I hope you can solve.很抱歉这样打扰您,但是我有个问题希望您能解决。I hated to barge in without an invitation.我讨厌不经邀请,擅自闯入。