This is the 3959th most frequent Catalan word.
concentrar
"Concentrar" means "to concentrate" or "to focus."
Here, 'concentrar-me' refers to the personal ability to focus mentally on a task or activity.
M'ha costat concentrar-me avui durant la classe.
It has been difficult for me to concentrate today during the class.
In this sentence, 'concentrar' is used figuratively to mean focusing resources or energy on a specific objective.
Hem de concentrar tots els esforços en aquest projecte.
We must concentrate all our efforts on this project.
Here, 'concentrar' is applied in a literal, scientific context, meaning to increase the concentration of a substance.