direct current dynamo

例句：

1. 1. The direct current dynamo isresponsible for generating electricity.
   直流发电机负责产生电力。
2. 2. The dynamo was used topower the lights in the factory.
   直流发电机被用来为工厂的灯光供电。
3. 3. Thedynamo is a crucial component ofthe electrical system.
   直流发电机是电气系统的关键组成部分。