estuvimos atestiguando
-we were testifying
Preterite progressivenosotrosconjugation ofatestiguar.

atestiguar

Desde que empezara los cursos hace veintinueve años estuvimos atestiguando una era humana nueva que requiere a la humanidad crear un mundo completamente nuevo para vivir encima.
Since I had started the courses twenty nine years ago, we were witnessing a new human era that requires humankind to create a completely new world in order to live on.
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Grim Reaper