safety device belt保安装置皮腰带
safety-belt buckle安全带扣环
safety-belt安全带;滑行
safety y belt安全带
safety seat belt安全带
safety-belt anchorage安全带固定点
safety of belt conveyor带式输送机设备安全
safety roll belt卷式安全带
safety back belt工作安全带
N-COUNT（可数名词） A safety belt is a strap attached to a seat in a car or aeroplane. You fasten it around your body and it stops you from being thrown forward if there is an accident. 安全带
Please return to your seats and fasten your safety belts.
请回到你们的座位上并系好安全带。