n.开始；毕业典礼
Seeds begin to burgeon at the commencement of spring. 春天来临时种子开始发芽。
At commencement, academic degrees are officially given. 在毕业典礼上，学位被正式颁发。
The commencement was held in the grand hall. 毕业典礼在豪华的大厅举行。
He made a speech at the commencement. 他在毕业典礼上做了一次演讲。
