(chiefly Brit.)a machine for converting mechanical energy into electrical energy, typically by means of rotating coils of copper wire in a magnetic field (主 英)发电机 ■(informal)an extremely energetic person (非正式)精力充沛的人 she was a dynamo in London politics. 她在伦敦政界非常活跃。
语源
late 19th cent.: abbreviation of dynamo-electric machine, from Greek dunamis 'power'