be on another planet

US /bi ɑn əˈnʌðər ˈplænɪt/
UK /bi ɑn əˈnʌðər ˈplænɪt/
"be on another planet" picture
1.

estar em outro planeta, estar no mundo da lua

to be unaware of what is happening around you, often because you are thinking about something else

:
He seems to be on another planet today, not paying attention to anything.
Ele parece estar em outro planeta hoje, não prestando atenção em nada.
When I tried to talk to her, she just stared blankly, like she was on another planet.
Quando tentei falar com ela, ela apenas olhou fixamente, como se estivesse em outro planeta.