Your Honor Mr. Mayor :Your Honon 同Your Excellency一样，用以尊称高级官员，“阁下”的意思
欢迎/开幕/闭幕词 welcome /opening/closing speech/adress
致开/闭幕词deliver/make an opening/closing speech
签字仪式signing ceremony
友好访问goodwill visit
宣布开幕 declare ...open ;declarethe commencement of...
宣布闭幕declare...the conclusion /closing of...
发表热情友好讲话make a warm and friendly speech
热情洋溢的欢迎词gracious speech of welcome
尊敬的市长先生Respected /respectable/honorable Mr.Mayor
陛下Your /His / Her Majesty
殿下Your/His /Her Highness/Excellency /Royal Highness
阁下YOUr/His /Her Hornor/Excellency
夫人Madam
东道国host country
值此.......之际on the occasion of
以........的名义in the name of
由衷的谢意Heartfelt thanks