Word/Phrase: it has been proven that
Translation: se ha demostrado que
Pronunciation: se a demostɾaðo ke
It has been proven that this method works - Se ha demostrado que este método funciona
It has been proven that exercise improves health - Se ha demostrado que el ejercicio mejora la salud
It has been proven that the theory is correct - Se ha demostrado que la teoría es correcta
It has been proven that learning a new language is beneficial - Se ha demostrado que aprender un nuevo idioma es beneficioso
It has been proven that sleep is essential for well-being - Se ha demostrado que el sueño es esencial para el bienestar