a pair of glasses
Ella se puso unas gafas oscuras para proteger sus ojos de los rayos del sol.
She put on dark glasses to protect her eyes from the sun's rays.
Para ir a la piscina necesitas un bañador, unas gafas y una toalla.
To go to the pool you need a swimsuit, goggles and a towel.
I buy some glasses.
Cómprate unas gafas nuevas en los grandes almacenes.
Buy yourself a new pair of glasses at the department store.
— Asesinos (2015)
Ha encargado unas gafas en los grandes almacenes.
He has ordered a pair of glasses at the department store.
— Asesinos (2015)