were revving
Past progressiveconjugation ofRev.There are other translations for this conjugation.

Rev

Just as we were revving up our momentum and really going for it, the lights abruptly changed to either Red or Yellow.
Justo cuando aumentábamos nuestra potencia y realmente íbamos hacia ella, las luces cambiaron abruptamente a Rojo o Amarillo.
From a few green clad women lolling around the park at around 9 am, by an hour later, things were revving up.
Alrededor de las 9 de la mañana había en el parque un grupo de jóvenes vestidas en verde oliva, una hora después las cosas se calentaban.
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