brainwave
noun [ C ] uk/ˈbreɪn.weɪv/ us/ˈbreɪn.weɪv/
(IDEA)
UK informal (US brainstorm)（突发的）奇想;灵感;妙计
a sudden clever idea
I couldn't see how I could get home from the station - then I had a brainwave. 我不知道怎样才能从车站回家——后来我灵机一动，想到了办法。
(PATTERN)
脑电波
any of several patterns of electrical activity in the brain