Se usa para decir que a uno le falta información o comprensión sobre algo.
Used to say one lacks information or understanding about something.
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See how the word “no sé” is used in sentences
No sé a qué hora empieza la reunión. — I don't know what time the meeting starts.
¿Sabes por qué está disgustada? No lo sé. — Do you know why she is upset? I don't know.
Ayúdame a entenderlo, por favor. No sé nada de esto. — Please help me understand. I don't know anything about this.
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