边疆伯爵夫人

例句：

1. 1. The ambassador was invited to the meeting by his government.
   该大使被其政府邀请参加会议。
2. 2. He is a distinguished member of the diplomatic corps.
   他是外交团的杰出成员。
3. 3. During the Cold War, ambassadors were often sent as envoys to negotiate peace.
   冷战期间，常派遣大使作为特命全权代表进行和平谈判。