但是，历史，或更具体地说，巴拉克·奥巴马(Barack Obama)似乎已经关停了这个掠过哈瓦那美国办事处25扇窗户的告示牌。
But history, or more specifically Barack Obama, appears to have pulled the plug on the billboard which flitted across 25 Windows of the US interests section in Havana.
自从2006年美国卫生总署发布了禁止在公共场合吸烟的禁令后，禁止吸烟的告示牌开始随处可见。
No Smoking signs started cropping up more frequently after the surgeongeneral endorsed bans on smoking in public places back in 2006.
自从2006年美国卫生总署发布了禁止在公共场合吸烟的禁令后，禁止吸烟的告示牌开始随处可见。
No Smoking signs started cropping up more frequently after the surgeongeneral endorsed bans on smoking in public places back in 2006.
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