Ua ib daim ntawv ntawm cov khoom siv ntim khoom siv, cov tsos tiv thaiv ntawm cov lag luam cov khoom lag luam tsis muaj peev xwm ua kom muaj kev cuam tshuam rau kev lag luam kev lag luam kev lag luam kev lag luam {}}
Los ntawm cov txheej txheem pom, cov khoom lag luam tshaj plaws ntawm cov khoom siv hluav taws xob tsis muaj kev cia siab rau cov khoom siv tshav kub muaj zog, uas tsis yog ua kom muaj zog ruaj khov, tab sis kuj yuav siv sij hawm ruaj khov cov khoom lag luam, ua tau zoo txuas lub txee lub neej ntawm cov khoom . Qee qhov kev tsim qauv los tiv thaiv kab xeb hauv qab kom pom kev ruaj khov {}}
Hais txog kev pom zoo, lub dav hlau chaw ntawm cov qauv khoom siv ntau dua rau cov khoom lag luam rau pem hauv ntej, thaum cov khoom siv hauv cov khoom siv sib xyaw, cov lus qhia rau kev siv thiab lwm cov ntaub ntawv . Nws tsim nyog sau cia uas tau siv cov yeeb yaj kiab tshwj xeeb los ntawm kev kov lub ntsej muag thiab lub zeem muag {8} {8}
Cov ntsiab lus muaj nuj nqis tseem ceeb ntawm cov tsos tsim ntawm kev txhawb nqa tus kheej yog qhov tsis yooj yim rau kev siv tus kheej tag nrho tswj cov ris tsho sib txawv ntawm cov khoom, tab sis kuj daws cov kev xav tau ntawm cov ntsiab lus.
Cov ntsiab lus tiv thaiv ib puag ncig, cov tsos ntawm cov khoom lag luam zoo nkauj tau txo qis ntawm cov khoom siv hluav taws xob tau ua kom muaj zog los ntawm ib qho chaw ua haujlwm ntawm ib qho nruab nrab hom nqi thiab cov neeg siv khoom siv .