brain strain

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释义
懵逼；一脸懵懂
when you are trying so hard to work out something far too complex for your state of mind at the present time that you get a headache.

例句
Chuck: I can feel your brain strain, Nathaniel. I don't expect you to understand. (Gossip Girl)
查克：我能感觉到你一头雾水，纳撒尼尔。我也没期望你能了解。(绯闻女孩)