Gufata neza icyuma cya diyama: Iyo diyama ibonye icyuma gikoreshwa, icyuma cyambaye ubusa kigomba gukingirwa, kigakorwa neza, kandi kigacibwa, kubera ko diyama yabonye icyuma gishobora gukoreshwa inshuro nyinshi, kandi niba icyuma cyambaye ubusa ni disformed, bizagorana gushakisha neza ya ne ...
Soma byinshi