abruptly  
adverb uk/əˈbrʌpt.li/ us/əˈbrʌpt.li/
  (suddenly)      
  突然地;意外地
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。 
 - More examples
 - The call ended abruptly.
 - She came back five minutes late from lunch and was abruptly dismissed.
 - The age of the dinosaurs ended abruptly about 65 million years ago.
 
  (rudely)      
 (讲话)生硬地;鲁莽地;唐突地
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。 
 - More examples
 - He spoke more abruptly than he intended.
 - "Why is this house so cold?" he asked abruptly.
 - It annoyed me that he spoke so abruptly.
 
See: abrupt