unpowered

例句：

1. 1. The old lighthouse was unpowered and could not illuminate the harbor.
   那座旧灯塔是无动力的，不能照亮港口。
2. 2. The car was unpowered and had to be towed to a repair shop.
   那辆车是无动力的，不得不拖到修理厂去修。
3. 3. The generator was unpowered due to a faulty switch.
   发电机因开关故障而无法供电。