Bala izingxenye ezihamba phambili zekhebula, ukugeleza kwevolumu, isivinini se-air.
Guqula ishubhu ibe yisiteshi sikwele.
Lolu hlelo lokusebenza lusetha indawo yezinhlelo zokusebenza ezimbili
- ukushayela
- bala isigaba sokuwela umoya
engakwazi ukuvuselelwa futhi.
Kubuyekezwe ngo-
Dis 10, 2019