have been upgrading
-he estado mejorando
Present perfect progressiveconjugation ofupgrade.There are other translations for this conjugation.

upgrade

Welcom to your freee Survival server! We have been upgrading every day!
Bienvenidos a su servidor Survival gratuito. Hemos actualizado cada día.
Since the early years of Nene Overland we have been upgrading the older Defenders with 200/300TDi 2.5 litre diesels.
Desde los primeros años de Nene Overland hemos estado actualizando los defensores más con 200/300TDi 2,5 litros diesel.
Hospitals around the country have been upgrading their neonatal intensive care units to include personal webcams for each tiny patient.
Los hospitales de todo el país han estado actualizando sus unidades de cuidados intensivos neonatales para incluir webcams personales en las camitas de cada pequeño paciente.
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