Hard-hat Linux标准内核实时化改造实例之四
hard-hat diver硬帽子潜水员
hard-hat item危险项目
hard-hat安全帽
hard felt hat硬毛颤帽
she worked hard so hat她努力所以帽子;她努力使帽子;她努力
hard-boiled hat安全帽
hard hat gear硬盔潜水装置
hard hat assembler安全帽装配工
N-COUNT（可数名词） A hard hat is a hat made from a hard material, which people wear to protect their heads on construction sites or in factories, or when riding a horse. 安全帽; 头盔