But the extent to which TV may or may not be to blame is a question that the study leaves unanswered.但是，哪类电视节目该不该受到指责，该研究并没有给出答案。Officials believe that more than one person may be to blame for the fire.政府官员认为，这场火灾可能不止一个人负有责任。A mechanical problem may be to blame for the crash.这次失事可能是由机械故障引起的。