楼上两位说的有理~!我上网查了一下symptom,“You can do a few tests to diagnose a starting system problem without any tools or measuring equipment. Turn on the headlights and start cranking.If lights go dim and the cranking action is sluggish, first suspect a low battery.”可是电池上的绿灯还亮着,anyway,我还是去买条jumper吧。