Your Honor Mr. Mayor :Your Honon 同Your Excellency一样，用以尊称高级官员，“阁下”的意思 (来源：英语学习门户 http://www.EnglishCN.com)

    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