Tom qab cov pwm tsim tiav lawm, peb yuav ua cov qauv thawj zaug rau kev kuaj xyuas cov khoom. Cov kauj ruam no yog qhov tseem ceeb los xyuas kom meej qhov sib xws hauv cov khoom tsim khoom.
Kev pab xa khoom:
Cov qauv tsim thawj zaug yog siv los xyuas qhov tseeb ntawm cov pwm thiab cov txheej txheem tsim khoom.
Muab cov qauv tshuaj ntsuam xyuas kom ntseeg tau tias cov khoom ua tau raws li cov qauv zoo.