prolocutoryoudaoicibaDictYouDict[prolocutor 词源字典]
"A chairperson of the lower house of convocation in a province of the Church of England", Late Middle English (in sense 2): from Latin, from prolocut- 'spoken out', from the verb proloqui, from pro- 'before' + loqui 'speak'.[prolocutor etymology, prolocutor origin, 英语词源]