(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 …

陛下 Your/His/Her Majesty

　　殿下 Your/His/Her (Royal/Imperial/Serene)Highness

　　阁下 Your/His/Her Honor/Excellency 贵宾们 distinguished guests 尊敬的主席先生respectable/honorable/respected Mr. President 至此… 之际 on the occasion of

　　代表… on behalf of …

　　我愿借此机会… I would like to take this opportunity to …/ I would like to avail myself of this great opportunity to … 我代表中国政府向各位来宾表示热烈欢迎，对会议的召开表示衷心祝贺!

　　On behalf of the Chinese government, I would like to extend our sincere welcome to all the guests here and to express our warm congratulations on the convening of this session. 最后，祝各位在北京生活愉快，并祝会议圆满成功!

　　Finally, I wish a full success of the conference and wish you all a pleasant stay here in Beijing.