Definition
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alguna
Se refiere a un elemento no específico dentro de un grupo o categoría, similar a 'cualquier'.
It refers to a non-specific element within a group or category, similar to 'any'.
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No tengo alguna idea sobre qué hacer.
I don't have any idea about what to do.
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Si tienes alguna pregunta, no dudes en preguntar.
If you have any questions, don't hesitate to ask.
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Ella no quiere comer alguna cosa que no sea saludable.
She doesn't want to eat anything that isn't healthy.