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dynamo

noun
🔊/ˈdaɪnəməʊ/
🔊/ˈdaɪnəməʊ/
(plural dynamos)
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  1. a device for turning mechanical energy (= energy from movement) into electricity; a generator发电机Topics Engineeringc2
  2. (informal) a person with a lot of energy精力充沛的人
    • the team’s midfield dynamo这个队的中场活跃分子
    • She's a human dynamo.她是个精力充沛的人。🔊🔊
    3. Word Originlate 19th cent.: abbreviation of dynamo-electric machine, from Greek dunamis ‘power’.