it is not known
It is not known where they moved to.
— Sympathy for Mr. Vengeance (2002)
No se sabe lo que sucederá mañana.
No one knows what will happen tomorrow.
Vivo, moviéndose y no se sabe.
Alive, moving and unknown.
No se sabe quién tiene la autoridad en este asunto.
It is not known who has the authority in this matter.
Aún no se sabe quién es el vencido.
It is not yet known who the loser is.
— La ironía del destino, o goce de su baño (1976)
El problema es que no se sabe lo suficiente sobre el Tourette.
The problem is that not enough is known about Tourette's.
— Incontrolable (I Swear) (2025)
No se sabe cuándo vino a Londres.
It is not known when he came to London.
No se sabe por dónde se ha escapado.
No one knows where it escaped from.
No se sabe si alguien le ayudó.
It is not known if anyone helped him.