In Saudi Arabia Guatemala and the virgin islands the laws generally require an emergency spare wheel.
在沙特阿拉伯、危地马拉和维尔京群岛，当地法规通常要求车辆配备应急备胎。
2
Drivers usually carry a spare wheel in their cars in case of emergency.
司机通常在汽车上有备用的轮胎以防万一。
3
The emergency escape device for high rise building consists of jack ladder, guide track, chain wheel, speed varying mechanism, hydraulic speed regulating controller, etc.