put your thinking cap on
US /pʊt jʊər ˈθɪŋkɪŋ kæp ɑn/
UK /pʊt jʊər ˈθɪŋkɪŋ kæp ɑn/

1.
開動腦筋, 認真思考
to think seriously and creatively about a problem or challenge
:
•
We need to put our thinking caps on to solve this complex problem.
我們需要開動腦筋來解決這個複雜的問題。
•
Okay everyone, put your thinking caps on, we need a new marketing strategy.
好了各位,開動腦筋,我們需要一個新的行銷策略。