have been upping
Present perfect progressiveconjugation ofup.There are other translations for this conjugation.

up

Ferry service employers in many parts of the world have been upping the pace, scheduling more trips between ports in the time available.
Los empleadores encargados de los servicios de transbordadores en numerosas partes del mundo han estado acelerando el ritmo y han programado más viajes entre puertos en el tiempo disponible.
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