C1
ascertain
/ˌæsəˈteɪn/
verb
ustalić
Also
upewnić sięsprawdzić
Definition
To find out something for certain, especially by investigation or experimentation.
Examples
We need to ascertain the facts before making a decision.
Musimy ustalić fakty, zanim podejmiemy decyzję.
Can you ascertain if the train has arrived?
Czy możesz sprawdzić, czy pociąg przyjechał?
Collocations
ascertain the factsascertain the truthascertain the cause
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