orate
v.
c.1600, "to pray, to plead," from Latin oratus, past participle of orare "speak, pray, plead, speak before a court or assembly" (see orator). The meaning "make a formal speech" emerged c.1860 in American English as a back-formation of oration. Related: Orated; orating.
〔李〕[orat;-e] v.演说； 演讲 ←or,orat (L orare,oratum)=to pray, or address 祷告，说话