Oxygene nicyo kintu cyibanze kugirango tubeho.Tudafite ogisijeni, ntidushobora kubaho.Turashobora kubona mubitaro ko abarwayi bamwe bakeneye silinderi yubuvuzi.Kubera ko aba barwayi bashobora guhumeka bisanzwe gusa na silinderi ya ogisijeni, hari ibisabwa bikomeye kubikwa ...
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