Thaum xaiv cov thermos, nws yog qhov tseem ceeb heev uas yuav tsum paub qee cov txheej txheem uas koj tuaj yeem paub qhov txawv ntawm cov khoom lag luam zoo los ntawm cov khoom pheej yig, vim tias yog koj yuav cov thermos tsis zoo, ces nws yuav nyuaj heev rau siv nws rau nws cov kev npaj lub hom phiaj.
Thawj kauj ruam yog los nrhiav cov ntaub ntawv hais txog cov neeg tsim khoom. Cov ntaub ntawv no feem ntau yog qhia txog lub cev ntawm qhov khoom lossis ntawm nws lub ntim. Yog tias tsis muaj cov ntaub ntawv hais txog lub chaw tsim khoom tsim, feem ntau yuav muaj cov thermos ua hauv kev tsim kev mob thiab tsis tuaj yeem hu ua qhov zoo. Thaum xaiv cov thermos, nco ntsoov qhib nws lub hau. Yog tias nyob rau tib lub sijhawm muaj qhov tsis hnov tsw thiab pungent hnov tus kheej, tom qab ntawd cov thermos ua los ntawm cov khoom siv tsis zoo. Nws yog qhov yuav tsum tau saib seb hom khoom noj twg yog cov khoom tsim rau (rau dej haus lossis rau cov zaub mov tawv), thiab tseem tshawb pom qhov ntim ntawm cov thermos. Cov khoom lag luam ntim khoom yuav tsum muaj cov ntaub ntawv hais txog ntev npaum li cas thermos tuaj yeem ua kom sov. Ua ntej ua kev yuav khoom, koj yuav tsum ua tib zoo kawm qhov pom ntawm cov thermos uas raug xaiv - tsis muaj kab nrib pleb los ntsaum rau ntawm nws, yuav ua li cas nruj nws lub hau. Lub thermos yuav tsum tau shaken me ntsis - txoj kev no koj tuaj yeem paub ua kom zoo li lub hwj tau tsau nyob hauv nws. Nws tseem tsim nyog kom them sai sai rau qhov uas tau muab nrog cov khoom. Qhov no tuaj yeem yog rooj plaub tshwj xeeb, siv tes tuav, lossis "nres khoom" uas tso cai rau koj txhim kho cov thermos nyob rau hauv kab rov tav.
