intrude
/ɪnˈtru:d; ɪn`trud/ v[I, Ipr, Tn.pr]
~ (oneself) on/upon sb/sth; ~ (oneself/sth) into sth (esp fml 尤作文雅语) put (oneself/sth) into a place or situation where one/it is unwelcome or unsuitable 闯入; 侵入; 打搅; 侵扰
I don't wish to intrude, but could I talk to you for a moment? 我无意打扰您, 不过我可以跟您谈一会儿吗?
I felt as though I was intruding on their private grief. 他们正伤心时, 我觉得我好像骚扰了他们.
If I could intrude a note of seriousness into this frivolous conversation... 我真想说一句, 叫他们谈话放严肃些....