高级文官

例句：

1. 1.The ambassador has been in charge of the negotiations for months.
   这位大使已经负责谈判几个月了。
2. 2. He was appointed as the ambassador to the United States.
   他被任命担任美国大使。
3. 3. She is a well-known author who has written many books as an ambassador.
   她是一位著名的作家，曾作为大使撰写了许多书籍。