Tam sim no, ntim cov yas tau suav txog qhov nce ntxiv hauv kev lag luam ntim khoom, thiab cov ntim ntim khoom seem tseem nce ntxiv txhua xyoo los ntawm xyoo, ua kev tiv thaiv ib puag ncig raws li kev hem thawj loj, thiab ntim ntsuab tau dhau los ua qhov tseem ceeb, yog li ntawd, ntsuab ntim yuav tsum tau tsim kho kom muaj zog, thiab kev txhim kho cov ntaub ntawv tshiab kom ua tiav qhov xav tau kev txhim kho tau dhau los ua qhov tseem ceeb tshaj plaws. Cov ntaub ntawv ntim khoom muaj cov yam ntxwv ntawm kev tiv thaiv ib puag ncig, rov ua dua tshiab thiab txuag nqi. Nrog rau qhov xav tau nce ntxiv rau kev tiv thaiv ib puag ncig ntawm cov khoom ntim hauv thoob ntiaj teb kev lag luam, cov ntawv ntim cov ntawv yog cov khoom ntim uas nyiam tshaj. Ntxiv rau kev tiv thaiv ib puag ncig, muaj lwm daim ntawv ntim khoom. Tus yam ntxwv yog tias nws tuaj yeem hla lub qhov rooj tshuaj xyuas khoom sai sai kom ua tiav lub hom phiaj ntawm kev thauj khoom sai thiab txuag nqi. Tam sim no cia' nkag siab qhov zoo ntawm cov ntawv ntim khoom thiab kev ua tau zoo ntawm ntim cov khoom siv ua ntim khoom noj. Raws li cov khoom ntim niaj hnub no, ntawv feem ntau yog siv los ua cov ntawv ntim khoom, thawv ntawv, thawv ntawv, hnab ntawv, ntawv ntim thiab lwm yam khoom ntim. Ntawm lawv, cov duab los qhia corrugated thiab nws cov thooj ntawv nyob hauv txoj haujlwm tseem ceeb hauv cov ntawv ntim khoom thiab cov khoom lag luam; nws yog tsim los ntawm ntau yam khoom siv. Cov ntawv sib xyaw thiab cov duab los qhia, thiab cov ntawv tshwj xeeb tau siv dav, thiab yuav ib nrab hloov daim ntawv thov cov khoom ntim yas txhawm rau txhawm rau daws teeb meem kev tiv thaiv ib puag ncig los ntawm ntim yas. Nrog kev hloov pauv tshiab ntawm thev naus laus zis thiab kev nce qib ntawm lub sijhawm, nws ntseeg tias nyob rau yav tom ntej, daim ntawv yuav tshwm sim yam khoom tshiab hauv qhov muag rau pej xeem, thiab ntau yam khoom lag luam ntawv kuj tseem yuav hloov tau yam khoom hauv tib neeg' liv ua.
