ellos realizan

carry out, do

→ realizar
realiz carry out; make real + an 3rd-person plural present (indicative or subjunctive)
verb · third plural · present indicative Rare #46,299
carry out, do Often used for completing or executing an action, task, or activity; it can be a false friend with English “realize.”
SP: Cada semana realizan un informe para el jefe.
EN: Each week they carry out (prepare) a report for the boss.
Conjugation of realizar
Indicative present
SingularPlural
Third realiza realizan
Subjunctive present
SingularPlural
Third realiza realizan

Otra ronda de pruebas se realizan para descartar la posibilidad de cirugía.

Another round of tests is carried out to rule out the possibility of surgery.

— It's Such a Beautiful Day (2012)

Se realizan experimentos en todo el mundo.

Experiments are being conducted all over the world.

— Bugonia (2025)

Los médicos realizan un juramento de no lastimar a nadie.

Doctors take an oath not to harm anyone.

En cuanto a los experimentos, que sepa yo, se realizan con la capacidad mínima.

As far as I know, the experiments are being carried out with the minimum capacity.

— მონანიება (1987)