(致)欢迎/开幕/闭幕词 (deliver/make) a welcome/opening/closing speech/address/lecture
开/闭/揭幕式 opening/closing/unveiling ceremony 举行烈士纪念碑的揭幕典礼 unveil a monument to the martyrs 为展览会揭幕 inaugurate an exhibition
奠基典礼 foundation laying ceremony 开学典礼 school’s opening ceremony 毕业典礼 graduation ceremony /commencement 开国大典 founding ceremony of a state
婚礼 wedding ceremony 庆典 celebration 答谢宴会 return banquet
晚宴 evening reception/dinner 招待会/宴会 reception 冷餐招待会 buffet reception
联欢/新年/篝火晚会 get-together/spring festival/campfire party
酒会 cocktail party
宣布…开幕 declare…open; declare the commencement of …
宣布…闭幕 declare the closing/conclusion of …
