议定者

例句：

1. 1.The ambassador from the United States is givinga speech at the conference.
   美国大使正在会议上发表演讲。
2. 2. He was appointed as theambassador to France.
   他被任命担任法国大使。
3. 3.The ambassador's office is located inthe heart of the city.
   大使办公室位于市中心。