headn.头部；头脑；顶端；领袖；硬币的正面v.前进；为首；朝向adj.首要的；前面的Headcornn.黑德科恩(在英国；东经 0º37' 北纬 51º11')

1. A head covering of hard material, such as leather, metal, or plastic, worn by football players, firefighters, construction workers, motorcyclists, and others to protect the head.
   头盔由坚硬材料如皮革、金属或塑料制成的头部覆盖物，由橄榄球队员、消防队员、建筑工人、摩托车骑手或其他人配戴，用以保护头部