One minute he's travelling with his family, the next he's wrestling with a total stranger.上一分钟他还在与家人一起旅行，下一分钟他就和一个完全陌生的人扭打了起来。Why would you let a total stranger into the house?你怎么会让一个完全陌生的人进屋？She had been incredibly foolish to tell such things to a total stranger.她把这种事情告诉一个素昧平生的人实在愚蠢得令人难以置信。