举行会议/研讨会/大会/座谈会/学术报告会  hold a meeting/seminar/conference/forum/symposium

　　赞助人/主办人/承办人/协办人  patron/sponsor/organizer/co-organizer

　　举行谈判  enter into negotiation

　　交涉  make representations with sb. on sth./deal with sb.

　　事物性会谈  talks at working level

　　对口会谈  counterpart talks

　　议程项目  items on the agenda