The helmet cushions the head against violent collisions.头盔可以缓冲部受到的猛烈撞击。These airbags are designed to protect car drivers in head-on collisions.这些安全气囊是为保护汽车司机在车辆迎头相撞时免受伤害而设计的。Whiplash, a neck injury, is a result of automobile collisions.挥鞭伤，一种颈部损伤，是汽车相撞造成的。