Muaj ntau yam zoo los xaiv qhov zoohnab ev ntawv.Ua ntej tshaj plaws, cov hnab ev khoom zoo feem ntau yog ua los ntawm cov khoom siv zoo, xws li cov ntaub nylon muaj zog lossis cov tawv tawv, uas muaj qhov zoo dua qub, tuaj yeem tiv thaiv tus neeg siv khoom thiab ua kom lub neej ntev ntawm lub hnab.Qhov thib ob, cov hnab ev khoom zoo feem ntau muaj cov qauv tsim thiab tsim nyog, uas tuaj yeem ua tau zoo dua rau kev khaws cia thiab nqa cov kev xav tau ntawm cov neeg siv khoom.Tsis tas li ntawd, cov hnab ev ntawv no feem ntau muaj cov dej tsis zoo thiab kev tiv thaiv tub sab, uas tuaj yeem muab kev tiv thaiv zoo dua hauv kev ua si sab nraum zoov thiab mus ncig.Thaum kawg, xaiv lub hnab ev khoom zoo feem ntau kuj muab kev nplij siab zoo dua, xws li lub xub pwg nyom thiab cov ntaub qhwv rov qab, uas txo qhov qaug zog ntawm tus neeg siv thaum nqa lub hnab mus ntev.Hauv luv luv, xaiv lub hnab ev khoom zoo tuaj yeem txhim kho tus neeg siv lub neej zoo thiab txo cov teeb meem ntawm kev cuam tshuam los ntawm cov khoom.Nws yog qhov pom zoo xaiv.