主旨演講

keynote speech

owner / master / host / individual or party concerned / God / Lord / main / to indicate or signify / trump card (in card games)

gist / main idea / general tenor / one's judgment

imperial decree / purport / aim / purpose

to develop / to evolve / to practice / to perform / to play / to act

lecture / to make a speech

to speak / to explain / to negotiate / to emphasize / to be particular about / as far as sth is concerned / speech / lecture