valedictory /ˌvælɪˈdɪktərɪ/

• 1. 

  ADJ A valedictory speech, letter, or performance is one that is intended as a way of saying goodbye when someone leaves another person, a place, or a job. 告别的 [正式] [usu ADJ n]

  例：

  Mr. Walker made his valedictory address after two years as chairman.

  在担任主席职务两年后，沃克先生发表了告别演说。

• 2. 

  N-COUNT A valedictory is a speech that is given by the student with the highest marks in their class at their graduation ceremony. (顶尖毕业生)告别演说 [美国英语] [oft N n]