bicycle dynamo

例句：

1. 1. The bicycle dynamo is a small device that powers thelights on a bicycle.
   自行车发电机是一种小型设备，为自行车上的灯光提供动力。
2. 2. Thebicycle dynamo is essential for powering the lights and other electronics ona bicycle.
   自行车发电机对于给自行车的灯光和其他电子设备供电至关重要。
3. 3. The bicycledynamo is apopular choice for those who wantto power their bicycle's lightswithout using a separate battery.
   自行车发电机是那些想要不使用单独电池来为自行车的灯光供电的人的热门选择。