in a sudden, unexpected, and sometimes unpleasant way

He stood up abruptly and went outside. 他猛地站起身，向外面走去。

The talks ended abruptly when one of the delegations walked out in protest. 当一个代表团离场抗议时，会谈突然结束了。

in a way that seems rude and unfriendly, especially by using very few words when talking

"I don't care what you think," Audrey said abruptly. “我不在乎你怎么想，”奥黛丽粗鲁地说。

I know I sometimes speak and act abruptly. 我知道我有时说话和动作都很唐突。