be away with the fairies
US /bi əˈweɪ wɪð ðə ˈfɛəriz/
UK /bi əˈweɪ wɪð ðə ˈfɛəriz/

1.
心不在焉, 神遊物外
to be in a dream world, not paying attention to what is happening around you
:
•
She's always away with the fairies, daydreaming instead of working.
她總是心不在焉,白日做夢而不是工作。
•
During the meeting, he seemed to be away with the fairies, not contributing anything.
會議期間,他似乎心不在焉,什麼也沒貢獻。