pedal-dynamo

例句：

1. 1.The pedal-dynamo was a critical component of the new car's power system.
   踏板发电机是新款汽车动力系统的关键部件。
2. 2. The engineer used the pedal-dynamo to test the car's acceleration.
   工程师使用踏板发电机测试汽车的加速性能。
3. 3. The pedal-dynamo provided a reliable source of power for the workshop's machinery.
   踏板发电机为车间的机器提供了可靠的动力来源。