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what kind of audiovisual equipment youll need. if you could let me know your specific requirements by [date], ill have plenty of time to make sure that the hotel provides you with what you need. thank you again for agreeing to speak. i look forward to hearing from you. sincerely yours, name] [title] 英語(yǔ)會(huì)議邀請(qǐng)函范文篇三 dear sir