se balanceaba

was swaying

→ se
phrase Rare #56,037
was swaying Describes someone or something moving gently back and forth; the imperfect tense can emphasize an ongoing or repeated action in the past.
SP: La lámpara se balanceaba con el viento.
EN: The lamp was swaying in the wind.

El barco se balanceaba de lado a lado durante la tormenta.

The ship was rocking from side to side during the storm.

El auto se balanceaba solo.

The car was rocking on its own.

— Senna (2010)