1.US 开始，开端 a beginning 2.US 毕业典礼，学位授予典礼 graduation ceremonies at a school or college
词汇搭配
～+名词
～ address毕业典礼上的演说
句型例句
Would passengers please put out cigarettes before the commencement of the flight.请乘客们在飞机起飞前熄灭香烟。 He was invited to speak at the commencement.他受邀在毕业典礼上讲话。