Lub khob cawv cawv tseem ceeb heev li ntim cawv. Thaum tsim cov iav fwj, peb yuav tsum tau ua tib zoo xaiv cov khoom siv raw uas tsim nyog, txhawm rau xyuas kom meej tias peb lub khob cawv cawv yuav tsis muaj teeb meem. Yog li, dab tsi yog lub hauv paus ntsiab lus rau kev siv cov khoom siv raw hauv iav wine fwj?
Cov kev xav tau zoo rau cov khoom siv raw. Thaum xaiv cov khoom siv raw, peb yuav tsum ua tib zoo xaiv cov khoom siv raw khoom zoo. Cov kev xav tau rau qhov zoo ntawm cov khoom siv raw feem ntau suav nrog cov tshuaj lom neeg muaj pes tsawg leeg ntawm cov khoom siv raw, cov ntsuas ntawm cov ntxhia thiab cov particle muaj pes tsawg leeg. Cov khoom siv raw peb xaiv yuav tsum ua kom tau raws li qhov yuav tsum tau ua ua ntej lawv tuaj yeem muab tso rau hauv kev siv, thiaj li ua kom lub khob cawv txiv hmab ua tau zoo.
Siv tsawg los yog tsis muaj cov khoom siv raw uas tsim kev puas tsuaj rau tib neeg lub cev thiab ib puag ncig. Thaum xaiv cov khoom siv raw rau iav fwj, nws yog qhov zoo tshaj plaws los siv tsawg los yog tsis muaj cov khoom siv raw uas muaj kev phom sij rau tib neeg lub cev thiab ib puag ncig, uas muaj kev tiv thaiv zoo rau peb lub cev thiab ib puag ncig, thiab tuaj yeem ua kom ruaj khov thiab ntev. -lub sij hawm kev loj hlob ntawm lub khob cawv cawv lub raj mis Hoobkas.