commencements
n. 开始( commencement的名词复数 ); 开端; 毕业典礼; 学位授予典礼
The commencement of something is its beginning.
All applicants should be at least 16 years of age at the commencement of this course.
申请修读这门课程者至少要年满16岁。
Commencement is a ceremony at a university, college, or high school at which students formally receive their degrees or diplomas.