celebramos su cumpleaños

we celebrate their birthday

→ celebrar
phrase Rare #47,112
we celebrate their birthday “Celebramos” can mean either “we celebrate” or “we celebrated,” depending on context. “Su” can mean his, her, or their.
SP: Cada año celebramos su cumpleaños juntos.
EN: We celebrate their birthday together every year.

Celebramos su cumpleaños con una fiesta.

We celebrated his birthday with a party.

¿Por qué celebramos su cumpleaños como un funeral?

Why are we celebrating their birthday like a funeral?

— Viaje a las estrellas II: La ira de Khan (1982)

Celebramos su cumpleaños.

We celebrated his birthday.

Recuerdo cuando celebramos su cumpleaños en Circeo.

I remember when we celebrated his birthday in Circeo.

— Perfectos desconocidos (2016)