be away with the fairies

US /bi əˈweɪ wɪð ðə ˈfɛəriz/
UK /bi əˈweɪ wɪð ðə ˈfɛəriz/
"be away with the fairies" picture
1.

心不在焉, 神游物外

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.
她总是心不在焉,白日做梦而不是工作。
During the meeting, he seemed to be away with the fairies, not contributing anything.
会议期间,他似乎心不在焉,什么也没贡献。