know it
Ils le savent tout de même bien, qu'on les attend.
They do know very well that people are waiting for them, after all.
— Cléo from 5 to 7 (1962)
Les blancs le savent et ils en ont peur.
White people know this and they are afraid of it.
— Le Frère 2 (2000)
Few people know this.
La plupart des gens ne le savent pas.
Most people don't know this.