brainwork

名词 n.

英文释义

名词 n.
  1. Work done with the brain; mental effort. uncountable
    — http://www.gutenberg.net.au/ebooks01/0100011h.html But not more comfortable than we need, I can tell you, comrades, with all the brainwork we have to do nowadays.

词源

From brain + work.
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