名词

1. 发电机
A dynamo is a device that uses the movement of a machine or vehicle to produce electricity.

2. 精力充沛的人
If you describe someone as a dynamo, you mean that they are very energetic and are always busy and active.

1. generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature