He became a total buzz-kill when he brought up the topic of failures while everyone was celebrating the victory.

buzz-kill 是一个复合词，由 buzz 和 kill 组成。buzz 原指"嗡嗡声"，引申为"兴奋、热闹的氛围"；kill 意思是"杀死、破坏"。buzz-kill 字面意思是"破坏热闹氛围"，指"扫兴的人或事"。 在俚语中，buzz-kill 专门用来形容那些在欢乐场合说扫兴话或做破坏气氛事情的人。