到1997年，威廉·杰斐逊·克林顿签署了一项行政命令，除了特别指定的房间，所有的联邦建筑内都禁止吸烟。
By 1997, William Jefferson Clinton had signed an executive order banning smoking in all Federal buildings outside of specially designated rooms.
到1997年，威廉·杰斐逊·克林顿签署了一项行政命令，除了特别指定的房间，所有的联邦建筑内都禁止吸烟。
By 1997, William Jefferson Clinton had signed an executive order banning smoking in all Federal buildings outside of specially designated rooms.
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