开动机器

Traditional (Taiwan): 開動機器

kāidòngjīqì ㄎㄞ ㄉㄨㄥˋ ㄐㄧ ㄑㄧˋ

    • to think hard
    • to get one's brain working (humorous)

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
start the machine
Meaning
Humorous way of saying to think hard, as if starting up your brain.

Sources