hard hat

• 安全帽是一种刚性防护头盔，主要在建筑工地、工业场所或其他危险环境中佩戴，用于保护头部免受坠落物、碎片或撞击的伤害。

A rigid protective helmet worn primarily on construction sites, industrial workplaces, or other hazardous environments to shield the head from falling objects, debris, or impacts.

1. Protective helmetA2formal

   A rigid helmet worn on construction sites, factories, and other hazardous areas to protect the head from injury.

   安全帽

   • All workers must wear a hard hat on the construction site.
   • He put on his hard hat before entering the tunnel.
   • The safety inspector checked that everyone had a hard hat.

2. Construction worker (slang)B2informalamerican

   A slang term for a construction worker or someone who works in a manual labor job requiring a hard hat.

   建筑工人（俚语）

   • The hard hats were having lunch near the crane.
   • My uncle is a hard hat who works on skyscrapers.
   • The hard hats started their shift at dawn.