helmet

• 戴在头上用于保护头部的防护装备，常用于骑车、摩托车、运动或建筑施工等活动中以保证安全。

A protective head covering worn for safety in various activities such as cycling, motorcycling, sports, or construction work.

1. Protective headgearA1formal

   A hard or padded hat worn to protect the head from injury.

   防护头盔

   • Always wear a helmet when riding a bicycle.
   • The construction worker put on his safety helmet.
   • Motorcyclists are required by law to wear a helmet.

   同义词casquecrash helmethard hat

2. Sports headgearA2formalsport

   A protective hat worn in various sports to prevent head injuries.

   运动头盔

   • The football player's helmet had a visor.
   • She bought a new helmet for ice skating.
   • The hockey goalie's helmet is specially designed for protection.

   同义词crash helmetskid lid