外勤公务

例句：

1. 1. He was sent to the city for an important meeting.
   他被派去城市参加一个重要的会议。
2. 2. The ambassador's duties include foreign diplomacy and international relations.
   大使的职责包括外交和国际关系。
3. 3. The government is currently focusing on improving its foreign service capabilities.
   政府目前正在专注于提高其外交服务能力。