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应美国消防协会的邀请,5月我们去美国访问,参加了于5月16至17日在波士顿市召开的国际消防协会联盟1996年会议.
At the invitation of the National Fire Protection Association, in May we went to the United States to attend the 1996 conference of the International Association of Fire Protection Associations held in Boston from May 16 to 17.