head in the clouds
心不在焉、幻想、不现实
口语·形容不切实际或走神
英文释义
to be daydreaming or not paying attention to reality
例句
She's always got her head in the clouds during math class, dreaming about her vacation.
典故来源
源自抬头看云、脱离现实的形象，比喻人沉迷幻想或心不在焉。