we don't know
We don't know where he is.
Nous ignorons encore beaucoup de choses.
We still don't know a lot of things.
Nous ignorons de quoi il s'agit.
We don't know what it's about.
— Star Trek III : À la recherche de Spock (1984)
Nous ignorons ce qui se passe là-bas.
We don't know what's going on over there.
— Aliens, le retour (1986)
Nous ignorons à quoi ils veulent l'employer.
We don't know what they want to use it for.
Que savent-ils que nous ignorons ?
What do they know that we don't?
Parfois, nous ignorons si nous sommes amoureux.
Sometimes, we don't know whether we're in love.
Nous ignorons pourquoi il a dû partir.
We don't know why he had to leave.