has been slumbering
-ha estado durmiendo
Present perfect progressivehe/sheconjugation ofslumber.

slumber

Red tape and a moderate earthquake did not deter a private group from meeting its goal of making contact with a 36-year-old NASA spacecraft that has been slumbering in deep space since 1997.
La cinta roja y un moderado temblor no pudieron desalentar a un grupo privado de logrear su meta de hacer contacto con un satélite de NASA de 36 años de antigüedad, que ha estado vagando en las profundidades del espacio exterior desde 1997.
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