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In a sentence
Je zbytočné kričať o pomoc. Nikto ťa nebude počuť.
There's no use crying for help. No one will hear you.
Je to zbytočné.
It's no use.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Example sentences from Tatoeba (CC BY 2.0 FR).
Full attribution on References.