She longed to break in on their conversation but didn't want to appear rude.

她很想打断他们的谈话，但又不愿显得粗鲁。

《牛津词典》

It's impolite to break in on other people's conversation.

打断他人的谈话是不礼貌的。

youdao

He longed to break in on their conversation but didn't want to appear rude.

他很想打断他们的谈话，但又不想显得很粗鲁。

youdao

The flotilla aimed to break a blockade that Israel has imposed on the Gaza Strip in an effort to stop weapons from reaching the region that is controlled by the militant Hamas movement.

VOA: standard.2010.06.03

And an Italian journalist used his mobile phone to capture footage of police in Iran using their motorbikes to charge at protesters on Sunday, in a bid to break up a street rally.

BBC: Young Iranians use video to tell story

Needing a two-goal win to guarantee a place in the last 16, the Swiss lacked a cutting edge and were unable to break down the stubborn central Americans, who wasted several chances to sneak a victory on the break in a hectic finale.

BBC: Switzerland 0-0 Honduras

In the latest twist, this week Ford decided to break its presence in Super Bowl XLVII on February 3 into two 30-second spots instead of its originally planned single, 60-second commercial.

FORBES: Lincoln Races Into Super Bowl On Fallon-Induced Twitter Jag