must know
You must know something.
You need to know that you have cancer.
Debe saber dónde se está escondiendo.
He must know where he is hiding.
— Ne le dis à personne (2006)
There is something you should know.
Pero debe saber que la tarifa está en un nivel diferente al mío.
But you should know that the rate is at a different level than mine.
— La única opción (2025)
El novato debe saber cuál es su sitio.
The newbie needs to know his place.
— Замри-умри-воскресни! (1990)