La tensión existente era fruto de un conflicto sin resolver entre los dos colegas del trabajo.The existing tension was the result of an unresolved conflict between the two coworkers.
Esta es la única copia existente del libro. Los otros se perdieron en un incendio.This is the only existent copy of the book. The other were lost in a fire.
El horario existente puede variar para adaptarse a las necesidades de la plantilla.The existing schedule may vary to accommodate the needs of the staff.
No creo que debamos ponerle fin a la existente cooperación entre empresas pues nos está siendo provechosa.I don't think we should end the present cooperation between the companies since it's benefitting us.