dans les nuages
He always walks around with his hands in his pockets and his head in the clouds.
Il se promène toujours les mains dans les poches et la tête dans les nuages.
That mountain is in the clouds.
Cette montagne est dans les nuages.
Réfugiez-vous dans les nuages !
— Nausicaä of the Valley of the Wind (1984)
He had his head in the clouds in class.
Il avait la tête dans les nuages en classe.
He walks with his hands in his pockets and his head in the clouds.
Il marche les mains dans les poches et la tête dans les nuages.