"So if you have hoarseness with tobacco or alcohol use, that would be a significant risk factor for cancer or other problems of the throat that could be serious.

VOA: special.2009.09.02

And the top answer that was 82% was the Internet, something like 60% said they thought the availablity of guns was a significant factor in the Columbine's shooting.

高达82%的人认为是因为网络，约有60%的人认为,枪支的使用是一个重要因素,造成了这起枪杀案。

麻省理工公开课 - 媒体、教育、市场课程节选

And the top answer that was 82% was the Internet, something like 60% said they thought the availablity of guns was a significant factor in the Columbine's shooting.

高达82%的人认为是因为网络，约有60%的人认为,枪支的使用是一个重要因素,造成了这起枪杀案。

麻省理工公开课 - 媒体、教育、市场课程节选