双动源无轨电车在脱离外界输电线的路段上由蓄电池供电或内燃机驱动的无轨电车
A dual-power trolleybus is a type of trolleybus that is powered by a battery or driven by an internal combustion engine on sections of the road that are disconnected from external power lines
以上为机器翻译结果，长、整句建议使用 人工翻译 。