have been sprouting
Present perfect progressiveconjugation ofsprout.There are other translations for this conjugation.

sprout

While most other social networks have been fast evolving over the last year, while others have been sprouting like mushrooms, there was one network that remained constant.
Mientras que las redes sociales han ido en rápida evolución en el último año, mientras que otros han estado brotando como hongos, no había una red que se mantuviera constante.
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