1) The purpose of the battery is to supply current to the starter motor, to providecurrent to the ignition system while cranking, to supply additional current when thedemand is higher than the alternator can supply and to act as an electrical reservoir.
译：蓄电池的作用是给起动机提供电流、当起动发动机时给点火系统提供电流，并且在需要比爱电机提供更大电流时充当电容器，提供辅助电流。
2) An charging system reenergizes the battery and supplies electricity for all the car'selectrical system.
译：充电系统为电池充电，为汽车电器系统提供电源。
3) The purpose of this system is to provide illumination by which for the driver tooperate the vehicle safely after dark, to increase the conspicuity of the vehicle, and todisplay information about the vehicle's presence，position, size，direction of travel andintended travel，and brake status.
译：这个系统的目的是提供照明，使驾驶员可以在夜晚安全驾驶汽车，使汽车更醒目，并显示有关汽车出现、位置、尺寸、行驶方向和打算要行驶的方向，以及刹车状态的信息。
4) To provide illumination to the rear when backing up，and to warn adjacent vehicleoperators and pedestrians of a vehicles rearward motion, each vehicle must be equippedwith at least one rear-mounted，rear-facing reversing lamp.
译：倒车时，为了提供车后照明，并警告车后驾驶员和行人，每一辆汽车必须至少装备一盏朝后的后置倒车灯。
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