brain wave

brain-wave的词性：
n.（名词）

1. A rhythmic fluctuation of electric potential between parts of the brain, as seen on an electroencephalogram.
脑波：大脑两部分间电势的节律性波动，可在脑电波记录仪上见到

2. Informal A sudden inspiration.
【非正式用语】 灵机一动