Raws li lub featurers ntawm ib cov khoom tau tsim ib qhov kev hloov ua duab rau ib daim duab. Nrog ib lub hom phiaj uas muaj tswv yim zoo yuav ua rau cov khoom muag zoo tshaj plaws los txhawb qhov kev tshaj tawm rau cov khoom muag. Daim ntawv tshwj xeeb cov ntawv nthuav qhia yuav nthuav cov yam ntxwv ntawm cov khoom thawm xyoo.
Feem ntau ntawm cov duab ntawv hauv qab npoo nrog ntau cov khoom ntxiv uas yog yooj yim sib dhos, cov yeeb yuj luam tawm thiab tsim tshwj xeeb yuav tsum muaj kev sib tw ntau dua li cov qauv pom.
