Tus qauv tsim qauv pob tshab ua rau cov neeg siv khoom kom pom meej cov zaub mov sab hauv, txhim kho qhov kev thov rov hais dua ntawm koj cov khoom. Lawv kuj tseem muaj kev thaiv kev thaiv zoo heev, ua rau muaj pa oxygen thiab noo noo kom cov khoom noj khoom noj tshiab thiab nkev rau lub sijhawm ntev dua. Kev siv cov khoom siv tau muaj los ua kom tau raws li cov khoom lag luam sib txawv, thiab ntim tshuab nqus tsev pab kom ntev lub txee lub neej ntawm nqaij ntses thiab lwm yam khoom txom ncauj.
Cim npe nrov: Cov khoom noj hiav txwv tshiab
