1. I shall wear red for the ceremony. 我将穿红衣服参加那个仪式。
2. Which ignition ceremony gave you a deeper impression? 哪届点火仪式给你留下印象最深？
3. Harry: Yes, there will be a formal signing ceremony tomorrow afternoon. 哈里：是的，明天下午将有一项正式的签字仪式。
英英解释
n.
1. a formal event performed on a special occasion
2. any activity that is performed in an especially solemn elaborate or formal way
3. the proper or conventional behavior on some solemn occasion
