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brainwave

noun

🔊/ˈbreɪnweɪv/

🔊/ˈbreɪnweɪv/

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(North American English also brainstorm)
a sudden good idea灵感；妙计
- I've had a brainwave!我灵机一动，想出了个主意来。🔊🔊
an electrical signal in the brain脑电波