代辩者

例句：

1. 1.The ambassador from China is here to discuss trade agreements.
   中国大使来这里讨论贸易协议。
2. 2.He was appointed as the ambassador of the United States in Japan.
   他被任命担任美国驻日本的大使。
3. 3. The ambassador's speech was well received by the audience.
   大使的演讲受到了观众的热烈欢迎。