commencement
- n. 开始，发端；毕业典礼
英英释意
- 1. the time at which something is supposed to begin;
- "they got an early start"
- "she knew from the get-go that he was the man for her"
- 2. an academic exercise in which diplomas are conferred
- 3. the act of starting something;
- "he was responsible for the beginning of negotiations"