Commencements
n. 开始( commencement的复数形式 ); 开端; 毕业典礼; 学位授予典礼
🗣️ 情景例句
No, thanks.
不啦，谢谢。
Excuse me I couldn't tell you beforehand.
对不起我不能事先告诉你。
They also have the disadvantage of being an expensive form of transport.
飞机另一个缺点是昂贵。