oration
noun[C]
formaluk/ɔːˈreɪ.ʃən//ɒrˈeɪ.ʃən/us/ɔːrˈeɪ.ʃən/aformalpublicspeechabout aserioussubject
(正式场合中就严肃话题的)致词,演说,演讲a talk
- talkShe will give a talk on keeping kids safe on the internet.
 - lectureThe lecture is entitled "War and the Modern American Presidency".
 - presentationWe were given a presentation of progress made to date.
 - speechYou might have to make a speech when you accept the award.
 - addressHe took the oath of office then delivered his inaugural address.
 - orationIt was to become one of the most famous orations in American history.
 
Lecturing & addressing
- ad lib
 - co-present
 - discourse
 - eunoia
 - extemporize
 - floor
 - harangue
 - hold
 - hold forth
 - lead
 - lead off
 - lightning talk
 - monologue
 - PechaKucha
 - presentation
 - sermon
 - sermonize
 - speak
 - speechify
 - valediction