Usages of przyczyna
Właścicielka nie znała przyczyny, więc musiała zgadywać.
The landlady didn't know the cause, so she must have guessed.
To prawdopodobnie była przyczyna awarii.
This was probably the cause of the breakdown.
Nie znamy przyczyny, ale coś ciągle stuka i puka.
We don't know the cause, but something is constantly tapping and knocking.
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