pasa algo
phrase
1. (used to talk about a possibility) 
Si pasa algo, por favor avísame.If something happens, please let me know.
Te doy mi número de teléfono para que me llames si pasa algo.I'll give you my phone number so that you call me if anything happens.
2. (used to talk about a fact) 
Pasa algo aquí, pero no sé qué es.Something is happening here, but I don't know what it is.
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