oscurecieron
-they darkened
The word oscurecieron is the preterite form of oscurecer in the third person plural.
See the full oscurecer conjugation

oscurecer

Entonces de repente, sus textos se oscurecieron.
Then all of a sudden, her texts went dark.
De repente las nubes oscurecieron el cielo.
Suddenly, the clouds darkened the sky.
Las cámaras de tráfico se oscurecieron cinco minutos antes de la emboscada.
The traffic cams on the street went dark five minutes before the ambush.
Las nubes se oscurecieron en duelo. Hombres, mujeres y niños fueron y vinieron.
The clouds were dark with mourning. Men, women and children came and went.
En aquel instante nuestra mente y nuestro corazón se oscurecieron por no comprender qué había sucedido.
At that moment our minds and hearts were darkened because we could not understand what had happened.
Mis ojos se oscurecieron por el dolor, Y mis pensamientos todos son como sombra.
Mine eye also is dim by reason of sorrow, and all my members are as a shadow.
Y mis ojos se oscurecieron de desabrimiento, Y mis pensamientos todos son como sombra.
My eye also is dim by reason of sorrow, and all my members are as a shade.
Y mis ojos se oscurecieron de desabrimiento, Y mis pensamientos todos son como sombra.
Mine eye also is dim by reason of sorrow, and all my members are as a shadow.
A pesar de que Moisés era de 120 años, sus ojos nunca se oscurecieron, ni perdió su vigor.
Although Moses was 120 years old, 'his eye was not dim, nor his vigor abated.'
Las hojas de plata lucían rojas a la luz del fuego; y cuando Túrin vio el sello, se le oscurecieron los ojos.
The silver leaves were red in the firelight; and when Túrin saw the seal his eyes darkened.
Incluso las luces brillantes del despertar espiritual se oscurecieron por el comprar y vender de la plaza del mercado; lo que debería ser ofrecido gratuitamente se comercializó y explotó.
Even the bright lights of spiritual awakening were obscured by the buying and selling of the marketplace—what should be given freely was commercialized and exploited.
Las nubes de humo oscurecieron el cielo.
The billows of smoke darkened the sky.
Los sismógrafos en vivo se oscurecieron, a pesar de que solo hace poco tiempo que habían sido apagados, con Venezuela exhibiendo un doble remezón con 12 horas de separación.
The live seismographs went dark, even though they had only recently been tuned down, with Venezuela showing a double shudder 12 hours apart.
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