闭幕式

例句：

1. 1.The ambassador has been invited to the meeting.
   大使被邀请参加会议。
2. 2. He is a respected ambassador of peace.
   他是一位受人尊敬的和平使者。
3. 3.His diplomatic skills have made him an ambassador of goodwill.
   他的外交技巧使他成为了友好使者的代表。