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Nebude to trvať dlho.
It won't take long.
Zaujímalo by ma, ako dlho to bude trvať.
I wonder how long it's going to take.
Nebude to trvať dlho, kým sa vrátim.
It won't be long before I come back.
Tom povedal, že to pravdepodobne nebude trvať príliš dlho.
Tom said that it probably wouldn't take too much time.
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.