单词key-note-speaker
网络: 主要演讲者；特邀讲者；演讲人
Workplace Ethics Forum, Key Note Speaker, Professional and Educational International Association, San Jose, USA
职业道德论坛，主讲，美国硅谷专业与教育协会
He was asked to fill in for the key-note speaker at the last minute,
他最后一分钟接到通知，代替主要发言人在大会上讲话。