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Ulwazi Olunye Ngepayipi Lokukhipha Isithuthuthu
Umehluko phakathi kwesigaba somsila kuphela kanye nesigaba sonke: isigaba somsila sibonakala nge-lightweight ne-sound wave, kuyilapho sonke isigaba sibonakala ngokusebenza okwengeziwe.Ingxenye yomsila yindawo enevolumu enkulu futhi esindayo...Funda kabanzi
