Usages of żwir
Obawiam się, żebyś nie rozsypał żwiru na podłogę.
I am afraid that you might spill the gravel on the floor.
Podczas podmiany wody czyścimy żwir i podłoże.
During the water change, we clean the gravel and the substrate.
Czysty żwir jest ważny dla parametrów wody.
Clean gravel is important for the water parameters.
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