This is the 7741st most frequent Catalan word.
centrar
To center.
In this sentence, 'centrar' is used reflexively to denote concentrating or focusing on something.
He de centrar l'atenció en la tasca.
I have to focus attention on the task.
Here, 'centrar' is used transitively to indicate directing or aligning an explanation towards specific details.
La professora va centrar l'explicació en els detalls importants.
The teacher focused the explanation on the important details.
In this example, 'centrar-se' is used reflexively to mean specifically focusing oneself on a main subject.