to understand what
Me tomó un poco de tiempo entender lo que ella trataba de decir.
It took me a little while to understand what she was trying to say.
Me costaba bastante entender lo que estaba diciendo.
I had a hard time understanding what he was saying.
No puede entender lo que es amar a alguien.
He/She can't understand what it's like to love someone.
No podía entender lo que estaba sintiendo.
I couldn't understand what I was feeling.
— Como agua para chocolate (1992)
Ella tenía suficiente intuición para entender lo que él realmente quería decir.
She had enough intuition to understand what he really meant.
Trato de entender lo que pasaba por su cabeza.
I try to understand what was going through his mind.
— Tres colores: Azul (1993)
Tom no parece entender lo que Mary trata de decir.
Tom doesn't seem to understand what Mary is trying to say.
Me fue muy difícil entender lo que él estaba diciendo.
It was very difficult for me to understand what he was saying.
No podíamos entender lo que ellos estaban tratando de decir.
We couldn't understand what they were trying to say.
Fue bastante difícil para mí entender lo que él estaba diciendo.
It was quite difficult for me to understand what he was saying.