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need

In a sentence
V prípade núdze využite schodisko, nie výťah.
In an emergency, use the stairway, not the elevator.
V prípade núdze stačte toto tlačidlo.
Press this button in case of emergency.
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.