Tus neeg saib xyuas cov dej noo yog hais txog ib chav kawm ntawm cov khoom uas tuaj yeem txhim kho kev ruaj ntseg ntawm cov khoom, tswj cov dej sab hauv lub peev xwm ntawm cov khoom noj, thiab txhim kho cov duab, tsw, xim, thiab lwm yam ntawm cov khoom noj thaum lub sij hawm ua zaub mov. Cov khoom ntxiv los pab ua kom noo noo nyob rau hauv foo ...
Nyeem ntxiv