estaban abortando
-they/you were aborting
Imperfecto progresivo para el sujeto ellos/ellas/ustedes del verbo abortar.

abortar

Hablé con agricultores cuyas ovejas estaban abortando a consecuencia de haber bebido agua infectada.
I talked with farmers whose ewes were aborting their lambs due to drinking the infected water.
Palabra del día
la rebaja