Spur iav yog ib lub cylindrical zoo li tus hniav tivthaiv siv nyob rau hauv cov khoom siv los hloov cov neeg kho tshuab txav raws li kev tswj ceev, lub zog, thiab lub zog. Cov iav yooj yim no yog tus nqi-zoo, ruaj khov, txhim khu kev qha thiab muab qhov zoo, tsis tu ncua kev tsav tsheb kom yooj yim ...
Nyeem ntxiv